HUD info, with pinouts and a full database of my knowledge

[Crazy K]

HUD pinout info and general knowledge

 

I own several different HUD units I have purchased. I have collected the pinouts for all of these and have verified them. I also include some info that I know about these HUDS and the cars that they go in.

 

disclaimer: there can be variances in wire colors, but this info should be dead on.

PLEASE PLEASE PLEASE let me know (PM ME!) if I am incorrect on the info I have stated.

Special thanks to stockGP and 99 Regal GS for info!

 

as owner of all but one of these HUDs, I have verified the wiring myself, and am posting these for the betterment of all W-body kind

 

WINDSHIELD INFO: according to the 1992 and 1994 CS Factory Service Manuals, the HUD windshield is just a windshield that has been tested for acceptable image ghosting, the less the better. This would translate to say that any failing windshield just went into a normal car, but that normal cars may have windshields good enough to accept the HUD image. There is nothing special about the HUD windshield in the 92 and 94 CS according to the FSM; it is also the same windshields used in all GEN 1 models(in both coupes/convertibles or sedans) This may not apply to aftermarket windshields, or to GEN 2 and newer windshields.

 

Any windshield may have good HUD imaging, but some sources indicate that HUD windshields are different.

Here's an article from DuPont describing what makes the HUD windshields different from standard glass, proving that there is a difference between the two:

 

http://www.dupont.com/safetyglass/lgn/stories/1004.html

thanks for the excellent link!

Edited February 7, 2014 by runt
Links to posts (in this thread) are dead.

[Crazy K]

1st Generation W-Body HUD (used on 1988-1990 CS and GP)

P/N ? manufactured by Hughes Aircraft Corp

 

The Unit: The 88-90 CS and GP HUDs are the ones with a flat glass and a vent like grill over the glass. The grill is designed for quick removal for cleaning. They have two HUGHES logos, the logos are located on black plaques on both sides of the unit. The HUD is mounted through the dash and most of the unit resides above the level of the dashpad. Other than dashboard fitment, the guts and the switches are identical (as far as I have been able to determine).

These early units came with HUD specific instrument clusters that have extra circuit boards in order to feed info to the HUD. Gnatgosplat (of W-body.com) has reported that the CS cluster for the HUD has a 'daughterboard' which presumably feeds fuel info to the cluster. Also, the HUD specific CS cluster does not illuminate the digital speedometer reading assuming you will be using the HUD for that info, but the analog half-circle still functions. I have heard similar of the GP HUD cluster, but have no further info on it's instrument cluster at this time.

 

Control Switch: The switch is a dimmer switch only. In the CS it is mounted to the underside of the far left end of the dashpad, past the end of the cluster surround. In the GP it is mounted to the bottom of the headlight pod, left of the cluster. The adjustment for the mirror is on the Unit itself.

E/M: GP's were switched via the DIC (if equipped) or via the wiper pod slider (if equipped). CS’s were switched via the UB3 digital cluster’s E/M button.

Pre-wired? I do not know. I would presume not, but I am still researching.

Fitment? CSs used the same dashpad from 88-94, a non-hud dashpad can be made into a HUD dashpad. GPs use the same dashpad from 88-93, a non-hud dashpad can be made into a HUD dashpad.

 

[pinouts courtesy of StockGP]

1988-90 CS/GP HUD ‘dimmer’ switch info

Pin | Wire Color | Purpose

A PNK/BLK switched power feed (fed from cluster circuit)

B BLK/WHT ground

C GRY/WHT dimmer input to HUD, HUD A4

D PNK power to HUD, HUD A1

 

1988-90 CS/GP HUD unit info

A1 PNK power from switch, switch D

A2 BLK/WHT ground

A3 BRN parking light input

A4 GRY/WHT Dimmer input, from Switch D

A5 WHT low fuel (from HUD)

A6 YEL left turn signal

A7 --- not used

A8 Lt Blu english/metric, metric = grounded

A9 DK GRN/WHT vss

A10 DK GRN right turn signal

A11 Lt GRN high beam

A12 --- not used

 

CS cluster info:

http://www.w-body.com/upgrades/88-91cutlass-cluster/index.html

1990 digital UB3 CS cluster

(info source: FSM)

Pin# Wire color Purpose(connection/source)

C1 PNK/BLK switched ignition feed

C2 LT BLU left turn

C3 DK BLU right turn

C4 TAN/WHT brake

C5 GRY/WHT ABS indicator

C6 TAN/BLK shift indicator

C7 LT GRN high beam

C8 --- not used

C9 --- not used

C10 YEL display dim enable

C11 GRY variable backlighting

C12 --- not used

C13 ORN

C14 BLK.WHT

C15 --- not used

C16 PNK/BLK switched ignition feed

 

D1 BLK ground

D2 YEL fasten seatbelt

D3 YEL/BLK low coolant level indicator

D4 BRN charge indicator

D5 BRN/WHT malfunction (service Engine Soon) indicator

D6 --- not used

D7 --- not used

D8 --- not used

D9 LT/BLU english metric switch

D10 BRN/WHT variable fluorescent dimmer input

D11 TAN oil pressure input

D12 DK GRN/WHT coolant temp sensor input

D13 PPL fuel

D14 --- not used

D15 DK GRN VSS speedo input

D16 ORN constant hot, cluster memory

 

 

89-91 CS Driver Information System

C1 A ORN constant hot

C1 B PNK/BLK hot in run

C1 C YEL vf dimming

C1 D GRY variable backlighting

C1 E BLK/WHT ground

C1 F not used

C1 G LT BLU E/M output

C1 H BLK ground

 

C2 A ORN

C2 B DK GRN

C2 C PPL fuel gage sender

C2 D BLK ground

 

If a car is pre-wired, the connector will be hiding behind the climate controls. Usually 89-91 cars with Automatic Climate Controls will be equipped.

before you splice anything for the DIS, look deep and good behind your climate controls, your car might be prewired and they might be tucked up back there. if not follow this:

 

The BLUE connector is C1.

C1 A ORN constant hot

Wire A = a RED wire. Connect it to an ORANGE wire that

is HOT ALL OF THE TIME. (I connected mine to the

ORANGE wire that gives power to the cigarette lighter,

but it is recommended that you connect it to the ELEC.

Fuse #2 constant +12V (top row, middle fuse).)

 

 

C1 B PNK/BLK hot in run = PINK/BLACK. Connect it to a wire that is HOT

IN RUN. (I connected mine to one of the PINK/BLACK

wire in my dash, but it is recommended that you

connect it to CLUST. Fuse #9 switched +12V (3rd row,

far right).)

 

 

C1 C YEL vf dimming= BROWN.

Connect it to the light on input. In

my car I have a YELLOW wire in slot C10 but I think

that that is exclusive to the digi-dash. I want to say

that there should be a YELLOW wire coming out of the

headlight switch that should work. I know that on my

dash, when the lights are on, and the display is at

MAX, then it has no power in the wire, but when I

adjust the lever down, the wire becomes hot, and dims

steadily. I use a tester that is just a screwdriver

looking thing that has a point at one end, and an

alligator clip that you hook up to ground.

 

 

C1 D GRY variable backlighting

Wire D = GREY. Connect this to one of the grey wire

for illumination. I hooked mine up to the GREY wire

that lights up the bulb for the cigarette lighter

light.

 

C1 E BLK/WHT ground

Wire E = BLACK/WHITE. This is a ground.

 

 

C1 F not used

Wire F = BLACK/GREY. This wire is not used.

 

C1 G LT BLU E/M output

Wire G = YELLOW. Connect this wire to the LITE BLUE

wire in the dash (You may not have this wire). This is

your English/metric wire. In my car, I push a button

on the dash to change it from English (MPH) to metric

(KPH). When this wire is hooked up, it automatically

changes the DIC display from one to the other when the

E/M button is pushed on the dash. This is a wire that

is not necessary for the DIC to function, so if you do

not have the wire, then just leave it unconnected.

 

C1 H BLK ground

Wire H = BLACK. This is a ground. I hooked this up to

the BLACK wire connected to the cigarette lighter

light.

 

 

 

The BLACK connector is C2.

 

 

 

C2 A ORNG

Wire A is ORANGE. Connect this to the ORANGE wire

coming out of the ALDL connector under your dash. This

is your SERIAL DATA INPUT where the DIC will get the

info for your gauges button.

 

C2 B DK GRN

Wire B = DARK GREEN. Connect this to the DARK GREEN

wire in the dash. This is your Vehicle Speed Input. In

my car it is wire number D15.

 

 

C2 C PPL fuel gage sender

Wire C = PINK. Connect this one to the PURPLE wire in

the dash. This is your vehicle Fuel sender wire. In my

car it is wire number D13.

 

 

C2 D BLK ground

Wire D = BLACK/GREEN. This is another GROUND. It is

not used in the 91 model.

 

 

 

Driver Info System was not available 92+.

 

 

You will not find a new cutlass with one. If you put

one in your car, then it will go where the storage

cubbyhole is under the ashtray. The screw-holes for

the 98 Regency’s DIC is identical the Cutlasses, so it

will go there with no problem. If you get the DIC out

of a Cutlass, then be sure to get the storage pocket

as well. IF (OR WHEN) you get the HUD, then the

control switch will go where the storage is. 89-90

cars got a little pocket in the empty space. HUD

control panel was mounted above the headlight switch

(below the dash pad).

91 cars got a little pocket if they didn't have HUD.

Cars with HUD got the control panel instead of the

pocket.

 

 

note though that, at least in my car, the short lengths of wire left

in my pigtail matched the colors in the car instead of what's listed above.

 

ex:

 

Quote

Wire C = BROWN. Connect it to the light on input. In

my car I have a YELLOW

 

 

My wire C was yellow on the pigtail, so it matched the car. another

year may have had brown there instead, for whatever reason.

 

also, get all the grounds listed and splice them together first so

you can do them all at one time. all of my wires for power/ground go

to my cig lighter wires, one to the ALDL connector and like 3-4 into

the cluster harness/headlight switch harness

[Crazy K]

Version II W-Body HUD Unit (used on 1991 – 1994 CS, and 1991-1993 GP)

 

The Unit: The 91-94 CS and 91-93 GP HUDs are the ergonomic looking ones that have a softly rounded cover. They are mounted through the dash and most of the unit resides at the level of the dashpad. Adjustment of the mirror is done by a cable that is controlled from the switch. Other than dashboard fitment, the guts are similar.

Unlike the earliest model, the instrument cluster feeds info to the HUD but is not HUD specific during these model years.

Control Switch:

-The 91-94 CS HUD control switch is located on the right side of the bottom opening of the center console sport pod. In models that have the HUD, the opening is reduced, and a smaller pocket is installed, unless a DIS/DIC was included (DIS/DIC was not offered after 91, iirc). You can add the DIS/DIC, but you will want to make sure you get the reduced pocket if you don't. The switch is backlight by up to 4 bulbs(everyone unit observed is missing at least one bulb) the display lights up blue, and the color is not changeable.

-The 91-93 GP HUD control switch is located at the bottom of the wiper pod on the right of the cluster. the adjuster is operated by a lever sticking out of it's right side, often the lever is broken. The switch lights up red, but the color is not changable, the material of the GP lens is red plastic

E/M: GP's were switched via the DIC (if equipped). CS’s were switched via the UB3 digital cluster’s E/M button in 91. it functioned for both the Cluster, the HUD, and the DIS/DIC. The 92-94 CS uses a separate switch, it is located at the front of the center console. (if you have a convertible, this spot is used in 92 and 93 verts for the fog light button, and in the 94 vert for the convertable top button. The question remains as to whether you can get both!)

Pre-wired? All CS’s that have auto climate will be prewired. Usually the switch pigtail is hiding behind the Automatic Climate Control and the HUD pigtail is tucked though the opening beneath whatever switch is to the left of the cluster. To my knowledge all GPs will be pre-wired as well.

Fitment? The 88-94 CS as well as the 88-93 GP dashpads are identical. This means you could install a CS or GP HUD into any identically dashboarded car assuming you wire it in.

 

Last but not least, the story of the Low Fuel light: Both models of the unit have a low fuel light. It ONLY works in GP units. On the 91-94 CS the circuit on the internal circuit board is absent, as the low fuel warning was incorporated into the check gauges warning indicator.

 

I just looked at the 91 HUD schematics and yes, it does show the fuel wire. I looked at the picture I took of my prewired HUD connector I had in my cutlass and there is no wire in the fuel position. So it might have been a last minute change to not include it.

 

 

CS INFO:

 

1991-1994 CS

 

91-94 HUD SWITCH

Connect to:

A BLK ground

B pnk/black switched ignition

C WHT display dimming, HUD unit D

D BLK ground

E BRN/WHT switched source, HUD unit A

F GRY gauge backlighting (variable interior)

 

91-94 CS HUD UNIT

P/N ? (pinouts/internals identical to GP)

(1st row)

A BLK or BRN/WHT switched ignition from HUD switch E

B BLK ground

C GRY/BLK or BRN parking light (constant exterior)

D WHT display dimming from HUD SWITCH A

E --- not known to be used, fuel if equipped (more data below)

F LT BLU left turn signal

(2nd row)

G BRN check gauge

H LT BLU english metric, grounded = metric

J DK GRN vss

K DK BLU right turn signal

L LT GRN high beam

M --- not used

 

1994 CS cluster

(info source: FSM)

Pin# Wire color Purpose(connection/source)

C1 TAN/WHT brake

C2 WHT tach

C3 GRY backlighting

C4 PPL fuel

C5 DK GRN VSS/speedo

C6 --- not used

C7 --- not used

C8 --- not used

C9 --- not used

C10 BLK ground

C11 --- not used

C12 --- not used

C13 BRN Ignition feed to gages

C14 --- not used

C15 PNK switched ignition feed

C16 DK GRN coolant temp

 

D1 BRN Check Gauges output to HUD

D2 BRN Airbag warning signal

D3 --- not used

D4 LT BLU left turn

D5 LT GRN high beam

D6 DK BLU right turn

D7 BLK ground

D8 YEL fasten seatbelt

D9 GRY security

D10 --- not used

D11 TAN oil pressure light

D12 --- not used

D13 LTGRN/BLK Antilock indicator

D14 YEL/BLK low coolant level indicator

D15 BRN to "check gauges" indicator (?)

D16 BRN/WHT malfunction (service Engine Soon) indicator

 

94-97 CS and 1994-1997 CS Headlight Switch maybe 94-96 Regal and 95+ Lumina/MC

[info courtesy of StockGP and 94 CS FSM]

A BLK ground

B WHT dome light

C DK BLU door open input

D GRY door lock "lock" signal

E TAN driver door "unlock" signal

F PNK hot

G BRN/WHT VF dimming output

H GRY variable backlighting

I GRY/BLK park lights "on" signal

J --- not used

K DK GRN headlights off signal to DRL (only on DRL equipped models)(also theoretic feed to FTP)

L YEL headlights on feed to dimmer switch

M --- not used

N RED circuit breaker hot ?

O ORN fused hot ?

P LT BLU park lights off signal to DRL(only on DRL equipped models)

R BRN Park lights on feed

 

 

GP

 

1991-1993 GP

 

91-93 GP HUD SWITCH Connect to:

A BLK ground

B PNK/BLK switched ignition (feeds from cluster)

C WHT display dimming HUD unit D

D BLK ground

E GRY gauge backlighting (variable interior)

F BRN/WHT switched source HUD unit A

 

 

91-93 GP HUD UNIT

P/N ? (pinouts/internals identical to CS)

(1st row)

A BLK or BRN/WHT switched ignition from HUD switch F

B BLK ground

C GRY/BLK or BRN parking light (constant exterior)

D WHT display dimming from HUD SWITCH A

E BRN fuel if equipped (more data below)

F LT BLU left turn signal

(2nd row)

G BRN check gauge

H LT BLU english metric, grounded = metric

J DK GRN vss

K DK BLU right turn signal

L LT GRN high beam

M --- not used

 

 

[Crazy K]

3rd Generation W-Body HUD (used in 1994-2003 GP, canceled option for 1995 CS)

 

the 1995 CS HUD is virtually non-existant. A Cutlass Supreme 'Pre-Production Model' (abv. 'CS PPM') with a HUD was built and GM planned to offer them but decided not to. You can find in the 95 CS owners manual the HUD instructions and pictures of a pre-production model. a small number of units are unconfirmed to exist, these include 5 alleged convertibles.

 

The Unit: The 95 CS PPM and 94-03 GP HUD units are physically identical in shape, size, and mounting. They are mounted beneath the surface of the dash. The have a modified version of the defrost grid cover that has an enlarged cover with a hole to cover the unit and allow it to project through. (see fitment for cover details) They all use an electric motor to adjust the mirror.

The 1994-1996 Third Generation HUD units are internally different that the 1997-2003 Third Generation HUD units, including a change of the wiring pins. This difference is due to a change in what the unit displays, including the addition of Radio info of the 97-03 model. (more info in Substitution below)

 

Instrument cluster: The instrument cluster has HUD outputs, but the cluster is not HUD specific. Two dedicated wires feed directly from the cluster to the HUD, and they feed the signal for the Temperature warning indicator, and Low Fuel indicator.

I have no data on the 97-04 GP Cluster.

 

Pre-wired? (all?) 95 CSs with Automatic Climate Control and most 94-96 GP’s (currently aware of two cases with wiring absent) will have the connectors for the HUD, and they are visible through the access panel located the vertical edge of the left side of the dash. If you are adding the HUD wiring to the car, all the HUD wiring splices into the feed wires going or coming from to the cluster, so you will only need a the cluster pinout.

I have no data on 97-04 pre-wire info.

 

Control Switch: The 95 CS PPM and 94-96 GP have the control switch located on the same panel as the headlight switch, to the right of the headlight switch. A regular headlight switch panel has the retainer tabs to hold the switch on the rear but lacks the holes.

The 97-03 GP uses the same switch, it is mounted in a dedicated panel, and is located to the right of the steering column where a small 2 inch by 3 inch cubby hole resides in a non-HUD model.

The switches interchange, but the faceplates do not.

 

E/M switch: The CS PPM E/M switch is mounted in the lower dash towards the left side of the panel beneath the steering column. GP’s had the E/M incorporated into the DIC (if equipped), otherwise it is located in the same position as the CS PPM(if equipped). The switch is identical to the one used as a 2nd gear start switch (non illuminated version) on 94-96 GPs.

 

Fitment. 1994-1996 GP huds and dashpads will go in without a problem into 94-96 GPs. The 97-03 HUD dash must be cut to allow the installation of the HUD, but the dashpad should cover a properly cut opeing without a problem.. The CS will require a custom dashcover, as neither GP dashpad is a direct fit, without modifications. The PPM dashboard was designed with the ‘optional’ opening as the 94-96 GP but a normal looking dash was put into the production model ?

Quote from: 99RegalGS

The Radio Display on the 97-03 may require a pontiac radio. A member on RegalGS.org swapped a 97-03 GP HUD into his car and he was unable to get the radio information to display into the HUD. I would like to try this for myself someday to make sure. The same problem might apply to the Olds and Chevy radios.

The pinout info i have for the 95+ CS, Buick, and chevy radio shows some datalines, but i do not know at this time if they are whats required for the HUD.

I will update this if I find out!

 

Substitution. Last but not least, you can substitute a 97-04 HUD unit for a 94-96, which will requiring rewiring the connector. Personally I would rather splice in the new connector into the wires intended for the old one, effectively creating two connectors, in case reverting to a original unit is necessary, as well as preventing confusion of the wiring.

 

 

97-03 PROBLEMS: Dimming/flickering/non-functioning issue:

These HUD units utilize a photocell to change the display intensity. This photocell can can suffer from a bad or cold solder joint, resulting in poor performance or complete non functioning of the unit.

 

 

Wiring harness recovery: Should you need to get the HUD wiring from a donor vehicle, you have a task ahead of you. It is critical that the harness be removed intact. You should remove the cluster, radio, switches... ie everything. locate the cluster connector, follow to the main harness, and go about 1 foot to the right. cut all wires there. keep everything that goes to the left. You will have to shatter the dash substructure behind the dash (or remove the dash if you care about it) and extract all the wiring intact. You will have a large bundle of wires

 

CUSTOM INSTALLATION(s)

FAQ/How-to: Installing HUD in a 1997-2004 Buick Regal (by digitaloutsider) good job Shaun!

 

1994-1996 GP and 1995 CS PPM info

 

94-03 HUD switch

GM P/N #10249411

[pinouts courtesy of StockGP]

Pin# Wire color Purpose(connection/source)

(row A)

A PNK fused ignition feed (shares cluster feed)

B GRY interior lamp dim signal (splices into headlight switch output)

C WHT display dimmer switch signal, (goes directly to HUD unit B8 94-96, ? 97-03)

D --- not used

(row

E YEL motor up, (direct to HUD unit B1 94-96, ? 97-03)

F BRN HUD switch output, (direct to HUD unit A1 94-96, ? 97-03)

G BLK ground(shares cluster ground)

H BRN motor down, (direct to HUD unit B2 94-96, ? 97-03)

 

94-96 GP HUD unit

GM P/N case 16196224, lens 16158593A, internals? 16158606 (internals made by FUTABA in Japan)

(row 1)

Pin# Wire color Purpose(connection/source)

A1 BRN HUD (Direct from HUD switch F)

A2 GRY/BLK parking lamp input (splices into headlight switch output)

A3 --- not used

A4 DK GRN VSS (links to VSS cluster feed)

A5 TAN oil pressure indicator (spliced into cluster feed)

A6 DK GRN/WHT low fuel(direct to Cluster ?)

A7 LT BLU left turn signal(splices into cluster feed)

A8 BLK ground (splices into cluster feed)

(row 2)

B1 YEL motor up (Direct from HUD switch E)

B2 BRN motor down, (Direct from HUD switch H)

B3 LT BLU english/metric, grounded=metric(feeds from Trip B5 or E/M switch)

B4 BRN charge indicator (splices into cluster feed)

B5 DRK GRN coolant temp (direct feed from cluster)

B6 LT GRN high beam (splices into cluster feed)

B7 DK BLU right turn signal (splices into cluster feed)

B8 WHT HUD dimmer switch input (Direct from HUD switch C)

 

1994-1996 GP, 1995-1997 CS, 1995-1996 Regal Cluster

(info courtesy of StockGP)

Pin# Wire color Purpose(connection/source)

C1 GRN/WHT fuel to HUD (must add!)

C2 --- not used

C3 PNK switched ignition feed

C4 BRN Airbag warning signal

C5 YEL/BLK low coolant level

C6 DK BLU GP=second gear start, Buick=cruise, CS=traction off(not used?)

C7 TAN oil pressure light

C8 BRN/WHT oil level light

C9 GRY backlighting

C10 --- not used

C11 --- not used

C12 YEL fasten seatbelt

C13 DK GRN VSS/speedo

C14 PPL fuel

C15 --- not used

C16 BLK ground

 

D1 BRN/WHT malfunction indicator?

D2 ORN charge

D3 GRY security

D4 DK BLU right turn

D5 LT GRN high beam

D6 LT BLU left turn

D7 LT GRN low trac

D8 DK GRN coolant temp to HUD (must ADD!)

D9 DK GRN coolant temp

D10 WHT ABS

D11 TAN/WHT brake

D12 WHT tach

D13 --- not used

D14 --- not used

D15 --- not used

D16 BLK ground

 

1994-1995 GP trip computer

P/N 16149822 made by Denso in Japan

(info courtesy Bri-Guy-GA and StockGP)

Pin# Wire color Purpose(connection/source)

A1 ORN hot

A2 BRN switched hot

A3 GRY/BLK park lamp "on" feed (splices into headlight switch I)

A4 --- not used

A5 BRN/WHT VF dimming signal (splices into headlight switch G)

A6 DK GRN VSS (splices into VSS cluster feed C13)

A7 TAN serial data line (splices into DLC M)

A8 BLK ground (splices into cluster D16)

B1 --- not used

B2 --- not used

B3 GRY dimming backlighting (splices into headlight switch I)

B4 LT GRN/BLK air temp sensor + (feeds to C200 connector)

B5 LT BLU E/M switch output (to HUD unit B3)

B6 PPL fuel (splices into cluster C14)

B7 YEL air temp sensor - (feeds to C200 connector)

B8 BLK ground

 

94-97 CS and 1994-1997 CS Headlight Switch maybe 94-96 Regal and 95+ Lumina/MC

[info courtesy of StockGP and 94 CS FSM]

Pin# Wire color Purpose(connection/source)

A BLK ground

B WHT dome light

C DK BLU door open input

D GRY door lock "lock" signal

E TAN driver door "unlock" signal

F PNK hot

G BRN/WHT VF dimming output

H GRY variable backlighting

I GRY/BLK park lights "on" signal

J --- not used

K DK GRN headlights off signal to DRL (only on DRL equipped models)(also theoretic feed to FTP)

L YEL headlights on feed to dimmer switch

M --- not used

N RED circuit breaker hot ?

O ORN fused hot ?

P LT BLU park lights off signal to DRL(only on DRL equipped models)

R BRN Park lights on feed

 

 

 

<b>1997-2003 GP specific info</b>

 

94-03 HUD switch

GM P/N #10249411

[pinouts courtesy of StockGP]

(row A)

Pin# Wire color Purpose(connection/source)

A PNK fused ignition feed (shares cluster feed)

B GRY interior lamp dim signal (splices into headlight switch output)

C WHT display dimmer switch signal, (goes directly to HUD unit B8 94-96, ? 97-03)

D --- not used

(row

E YEL motor up, (direct to HUD unit B1 94-96, ? 97-03)

F BRN HUD switch output, (direct to HUD unit A1 94-96, ? 97-03)

G BLK ground(shares cluster ground)

H BRN motor down, (direct to HUD unit B2 94-96, ? 97-03)

 

97-03 GP HUD UNIT (has radio info in the display)

(row 1)

Pin# Wire color Purpose(connection/source)

A1 BRN HUD switch output

A2 BRN charge indicator

A3 TAN oil pressure indicator

A4 DK GRN coolant temp indicator

A5 DK GRN entertainment and comfort serial data communicator (radio info!)

A6 WHT display dimmer signal switch, HUD switch C

A7 DK GRN vss

A8 BLK ground

(row 2)

B1 YEL motor up, HUD switch E

B2 BRN motor down, HUD switch H

B3 LT BLU english/metric, grounded=metric

B4 DK GRN/WHT fuel (+)

B5 LT GRN high beam (+)

B6 --- not used

B7 LT BLU left turn signal (+)

B8 DK BLU right turn signal (+)

[Crazy K]

4th Generation W-Body HUD (used on 2004+ GP)

[pinouts and info courtesy of 99RegalGS]

 

The Unit: Located under the dash surface. It uses an electric motor for adjustment.

The unit has a dot matrix display. It displays: Speed, Transaxle position, Compass, Ambient air temp, radio information, Turn signals, High beam, and some notification messages.

Control: Located on the center counsel.

E/M: controled by the DIC

 

04+ GP HUD Switch

 

Pin# | Wire Color | Purpose

1 GY Instrument Panel Lamp Supply Voltage

2 BK Ground

3 WH Low Reference

4 BN HUD Image Down Control

5 BN HUD Switch Signal

6 WH Illuminated Display Signal

7 YE HUD Image Up Control

8 -- Not Used

 

04+ GP HUD Unit

 

Pin# | Wire Color | Purpose

1 BN/WH HUD Class 2 Serial Data

2 YE HUD Image Up Control

3 BN HUD Image Down Control

4 BK/WH Ground

5 WH Illuminated Display Signal

6 OG Battery Positive Voltage

7 BN HUD Switch Signal

8 WH Low Reference

[Crazy K]

NON W HUDs

I include these because they can be utilized in a W as they feed off of identical signals. To my knowledge, these HUDs use the same 4000 pulses per mile as our cars do.

Here's some info on Bonneville HUD's

 

92-99

The Unit: Mounted beneath the surface of the dash. It has a similar cover to that of 94-03 GPs, which serves as a defroster grill as well as the HUD cover. The 92-96 HUD's use a cable for adjustment. The 97-99 models use an electric motor. They all displayed the same information: Speed, Turn signals, High beam, Low fuel, and Check gauges.

Control Switch: The switch is located directly to the left of the steering column.

E/M: The 92-96 control have a english/metric swith integrated into it. The 97-99 controls do not have the E/M switch. Instead the HUD was deciated either English or Metric at the factory by connecting pin 7 at the HUD to a ground or leaving it unconnected.

 

92-96 HUD Switch pinouts.

Pin# | Wire Color | Purpose

5 BRN 12v - Hot in Run

6 GRY Interior Lamp Dimming

7 WHT Display Dimming Output

8 BLK Ground

9 BLK/WHT Ground

10 LT BLU E/M Output

 

97-99 HUD Switch Pinouts.

Pin# | Wire Color | Purpose

5 BRN Motor Feed - Up

6 BRN 12v - Hot in Run

7 WHT Illuminated Display Signal

8 GRY Instrument Panel Lamp Feed

9 YEL Motor Feed - Down

10 BLK/WHT Ground

 

92-99 HUD Unit Pinouts

Pin# | Wire Color | Purpose

1 Not Used

2 YEL Interior Lamp Dimming

3 WHT Illuninated Display Signal

4 DK GRN Low Fuel Input

5 LT BLU LH Turn Signal Input

6 BRN Check Gauges Input

7 BLK E/M Ground

8 DK GRN/WHT VSS Input

9 LT GRN High Beam Input

10 DK BLU RH Turn Signal Input

11 BRN 12v - Hot in Run

12 BLK Ground

 

97-99 HUD Adjustment Motor

Pin# | Wire Color | Purpose

A YEL Motor Feed - Down

B BRN Motor Feed - Up

 

00-05 Bonneville HUD

The Unit: Located under the dash surface. They all have an electric motor for adjustment. The unit displays: Speed, High beam, Turn signals, Check gauges, Low fuel indicator, Radio information display.

The Control: It's located to the left of the steering column

E/M: Sent through the Serial Class 2 datastream.

 

more knowledge:

The 00+ Bonneville, 04+ GP, Lesabre, Aztec and Rendevous HUDs work off of the Serial Class 2 datastream. So they will not work on any OBD1 cars. The 94-03 GP HUD uses analog inputs, so they would be easy to ass to a car, provided you have all the correct inputs. The Park Avenue HUD and even the Corvette HUD need the gauge cluster for them to work. They would be the hardest to integrate into another car.

 

The Radio display input on the 00+ Bonneville, Aztec and Rendevous HUDs come from the Serial Class 2 Datasteam. This would make it harder for some cars being that the Radio doesn't connect to that datastream. (Basically any non-RDS radio).

 

 

FURTHER EDITING AND ADDITIONS ARE PENDING.

 

Please avoid unnecceasry posting so that this will make a clean FAQ thread!!!

PM me if you have a questions or problems with what I have written.

[Crazy K]

I plan to post pictures to serve within this thrad once i have a good set to look at. etc etc etc

 

 

 

FURTHER EDITING AND ADDITIONS ARE PENDING.

 

Please avoid unnecceasry posting so that this will make a clean FAQ thread!!!

PM me if you have a questions or problems with what I have written.

[Crazy K]

A question I have is the HUD from a 97-03 GP fit in a 95 GP? Will the wiring match up or will I have to make it work? Seems theres a lot more 97-03 HUD's available then 94-96 ones. On ebay anyway.

yes. I clarified the issue and added more info above, including a known how to link.

[Crazy K]

While the 88-93 GP dashpads are identical, the 89-90 HUD mounts differently than the 91-93 one. The 89-90 mounts right to the dashboard and the 91-93 mounts to a bracket that screws onto the dash itself.

good point for clarification.

 

this is true as well for the CS. The 88-90 CS mount right to the dashboard, and the 91-94 mount through the dash to a bracket below the dash.

 

 

[digitaloutsider]

Here's an article from DuPont describing what makes the HUD windshields different from standard glass, proving that there is a difference between the two:

 

http://www.dupont.com/safetyglass/lgn/stories/1004.html

[IRONDOG442]

Ken... you are indeed a plethora of knowledge, next time I am on "Who Wants to be a Millionare" you are my phone a friend.

[skiiirt]

next time I am on "Who Wants to be a Millionare"

 

When was the first?

[Justin]

A few pics of the first gen bracket fabbed into a CS dashpad. I didn't take any pics before fabbing up the defrost block off plate, but it was just a gaping hole I guess.

 

 

 

 

 

[rockfangd]

ok so i have a question, so for the 2nd gen hud unit for the cutlass it says that the hud unit wire D display dimming from HUD SWITCH A goes to switch position A which is ground? Is this correct, i just need to verify because i thought it would go to C which is display dimming. ? Hud unit D? lol i am new to the hud unit so i want to be sure. Thanks

 

[Crazy K]

I'll double check and answer that tonight

 

I actually have re-written all the srticles and will be swapping them fro fresher versions soon, once I get just a little more info.

[rockfangd]

cool can you pm me a copy of the new version of the 2nd gen hud for my cutty

[Bri-Guy-GA]

I have a question about GP's without the HUD/DIC wiring. I have everything tied in except the orange data wire. Where can I find one to tap into? I looked under the dash and didn't see anything. Any help would be appreciated.

[Crazy K]

I have a question about GP's without the HUD/DIC wiring. I have everything tied in except the orange data wire. Where can I find one to tap into? I looked under the dash and didn't see anything. Any help would be appreciated.

YEAR? If you are talking about the dataline that goes to the aldl connector... locate the aldl connector... where you plug in or stick a paper clip to diagnose a check engine light?

[Bri-Guy-GA]

I have a '95 GP SE with the 3.1. I need the data line to connect to the DIC, so it can display engine computer related information. I don't know what the aldl connector is or where it is, sorry.

[GtipGary]

I have a '95 GP SE with the 3.1. I need the data line to connect to the DIC, so it can display engine computer related information. I don't know what the aldl connector is or where it is, sorry.

 

Im pretty sure that would be the plug on the bottom of your dashboard (driver side) where you would plug in a scanner... It should be down underneath your steering wheel near your center console and looks like a white open plug...

[Addicted to eaton]

I have a '95 GP SE with the 3.1. I need the data line to connect to the DIC, so it can display engine computer related information. I don't know what the aldl connector is or where it is, sorry.

I think you are askin were

A7 TAN serial data line (splices into DLC M) is? If so... I have did this befor.

Under the stearing wheel closer to the middle console on down to the end of the plastic.. and u will find a its a black plug, maybe 2 inch's wide by like an inch tall there shuld be a tanish color or brown color wire.. Tap into it and ur good to go.

 

[Bri-Guy-GA]

I have a '95 GP SE with the 3.1. I need the data line to connect to the DIC, so it can display engine computer related information. I don't know what the aldl connector is or where it is, sorry.

 

Im pretty sure that would be the plug on the bottom of your dashboard (driver side) where you would plug in a scanner... It should be down underneath your steering wheel near your center console and looks like a white open plug...

 

OK, so is the tan (data) wire part of the scanner plug under the dash? All I need to do is supply data information to the DIC (trip computer) so it will show the proper info. Will tapping into this port allow that?

[Addicted to eaton]

Yes

[AWeb80]

How to disassemble a HUD box to clean it out......

 

was bored and had some fun.

 

 

 

[Garrett Powered]

how do you get the "check gauges" off for a 90 tgp?