Leaderboard

Try not to give into the habit of *throwing money at the problem*. Purchasing unnecessary part is a waste of money........ The code 43 may not necessarily be the knock sensor itself but an issue with the harness or possibly the ECM. Seeing as you have the code 53 (system overvoltage) if you know beyond a doubt that the alternators regulated output is approx 14.2 when the engine is running then the ECM could be the source of the issue.

HERE YOU GO: this is the typical wiring for the digital UB3: 1990 digital UB3 CS cluster CONNECTOR PIN# WIRE COLOR FUNCTION dUB3-C1 PNK/BLK INDICator FUSE circuit, hot in run, bulb test, and start (+) dUB3-C2 LT BLU left turn indicator (+) dUB3-C3 DK BLU right turn indicator (+) dUB3-C4 TAN/WHT brake indicator (-) dUB3-C5 GRY/WHT "Antilock" indicator dUB3-C6 TAN/BLK shift indicator (-) dUB3-C7 LT GRN high beam indicator (+) dUB3-C8 --- not used --- dUB3-C9 --- not used --- dUB3-C10 YEL VF display dim enable (+ to enable dimming) dUB3-C11 GRY Illumination (adjustable backlighting) (+) dUB3-C12 --- not used --- dUB3-C13 ORN Serial data link to aldl (for tach and data) dUB3-C14 BLK.WHT ground dUB3-C15 --- not used --- dUB3-C16 PNK/BLK CLUSTER FUSE circuit hot in run (+) CONNECTOR PIN# WIRE COLOR FUNCTION dUB3-D1 BLK ground for indicator bulbs dUB3-D2 YEL fasten seatbelt indicator dUB3-D3 YEL/BLK "low coolant" level indicator dUB3-D4 BRN "charge indicator" dUB3-D5 BRN/WHT "service Engine Soon" indicator dUB3-D6 --- not used --- dUB3-D7 --- not used --- dUB3-D8 --- not used --- dUB3-D9 LT/BLU english metric switch ouput(switch part of cluster) dUB3-D10 BRN/WHT VF dimmer input dUB3-D11 TAN oil pressure sensor input dUB3-D12 DK GRN/WHT coolant temperature sensor input dUB3-D13 PPL fuel level sender input dUB3-D14 --- not used --- dUB3-D15 DK GRN VSS speedometer input dUB3-D16 ORN ELEC FUSE circuit, constant hot, cluster memory (+) ************** 1994 analog UB3 CS cluster CONNECTOR PIN# WIRE COLOR FUNCTION 94aUB3-C1 TAN/WHT brake indicator 94aUB3-C2 WHT tachometer input 94aUB3-C3 GRY illumination (adjustable backlighting) 94aUB3-C4 PPL fuel level sender input 94aUB3-C5 DK GRN VSS speedometer input 94aUB3-C6 --- not used --- 94aUB3-C7 --- not used --- 94aUB3-C8 --- not used --- 94aUB3-C9 --- not used --- 94aUB3-C10 BLK ground 94aUB3-C11 GRY Illumination (adjustable backlighting) 94aUB3-C12 --- not used --- 94aUB3-C13 BRN Hot in run,ignition feed for gages 94aUB3-C14 --- not used --- 94aUB3-C15 PNK hot in (+) 94aUB3-C16 DK GRN coolant temperature sensor input CONNECTOR PIN# WIRE COLOR FUNCTION 94aUB3-D1 BRN Check Gauges output to HUD unit 94aUB3-D2 BRN Airbag (SIR) warning signal 94aUB3-D3 --- not used --- 94aUB3-D4 LT BLU left turn indicator (+) 94aUB3-D5 LT GRN high beam indicator (+) 94aUB3-D6 DK BLU right turn indicator (+) 94aUB3-D7 BLK ground 94aUB3-D8 YEL fasten seatbelt indicator 94aUB3-D9* GRY "security" (VATS) indicator(1994 ONLY) 94aUB3-D10 --- not used --- 94aUB3-D11 TAN oil pressure input 94aUB3-D12 --- not used --- 94aUB3-D13 LTGRN/BLK Antilock indicator 94aUB3-D14 YEL/BLK low coolant level indicator 94aUB3-D15 BRN charge indicator feed (sets check gauges indicator) 94aUB3-D16 BRN/WHT Service Engine Soon indicator *different pinouts between 92-93 and 94 analog cluster, you cannot substitute a 92-93 cluster for a 94 without loosing these critical indicators. 1990 digital UB3 CS cluster into a 94 Analog UB3 cluster equipped car: dUB3-C1 PNK/BLK INDICator FUSE circuit, hot in run, bulb test, and start (+) pending! dUB3-C2 LT BLU left turn indicator (+) 94aUB3-D4 LT BLU left turn indicator (+) dUB3-C3 DK BLU right turn indicator (+) 94aUB3-D6 DK BLU right turn indicator (+) dUB3-C4 TAN/WHT brake indicator (-) 94aUB3-C1 TAN/WHT brake indicator dUB3-C5 GRY/WHT "Antilock" indicator 94aUB3-D13 LTGRN/BLK Antilock indicator dUB3-C6 TAN/BLK shift indicator (-) not present, UNUSED. dUB3-C7 LT GRN high beam indicator (+) 94aUB3-D5 LT GRN high beam indicator (+) dUB3-C8 --- not used --- dUB3-C9 --- not used --- dUB3-C10 YEL VF display dim enable (+ to enable dimming) INFO PENDING!!! dUB3-C11 GRY Illumination (adjustable backlighting) (+) 94aUB3-C3 & 94aUB3-C11 GRY Illumination (adjustable backlighting) dUB3-C12 --- not used --- dUB3-C13 ORN Serial data link to aldl (for tach and data) you must run this wire to the ALDL connector TAN wire. dUB3-C14 BLK.WHT ground 94aUB3-C10 OR 94aUB3-D7 BLK ground dUB3-C15 --- not used --- dUB3-C16 PNK/BLK CLUSTER FUSE circuit hot in run (+) INFO PENDING!!! dUB3-D1 BLK ground for indicator bulbs 94aUB3-C10 OR 94aUB3-D7 BLK ground dUB3-D2 YEL fasten seatbelt indicator 94aUB3-D8 YEL fasten seatbelt indicator dUB3-D3 YEL/BLK "low coolant" level indicator 94aUB3-D14 YEL/BLK "low coolant" level indicator dUB3-D4 BRN "charge indicator" 94aUB3-D15 BRN charge indicator feed (sets check gauges indicator) dUB3-D5 BRN/WHT "service Engine Soon" indicator 94aUB3-D16 BRN/WHT "Service Engine Soon" indicator dUB3-D6 --- not used --- dUB3-D7 --- not used --- dUB3-D8 --- not used --- dUB3-D9 LT/BLU english metric switch ouput(switch part of cluster) dUB3-D10 BRN/WHT VF dimmer input dUB3-D11 TAN oil pressure sensor input 94aUB3-D11 TAN oil pressure sensor input dUB3-D12 DK GRN/WHT coolant temperature sensor input 94aUB3-C16 DK GRN coolant temperature sensor input dUB3-D13 PPL fuel level sender input 94aUB3-C4 PPL fuel level sender input dUB3-D14 --- not used --- dUB3-D15 DK GRN VSS speedometer input 94aUB3-C5 DK GRN VSS speedometer input dUB3-D16 ORN ELEC FUSE circuit, constant hot, cluster memory (+) RUN TO RADIO CONSTANT HOT WIRE MUST ADD!!! 94aUB3-D9* GRY "security" (VATS) indicator(1994 ONLY) 94aUB3-D2 BRN Airbag (SIR) warning signal(1994 ONLY) 94aUB3-C13 BRN Hot in run,ignition feed for gages 94aUB3-C15 PNK hot in (+) ???????????????????????????????????????????????????????????????????????????? NOT USED: CONNECTOR PIN# WIRE COLOR FUNCTION 94aUB3-C2 WHT tachometer input (ANALOG) 94aUB3-D1 BRN Check Gauges output to HUD unit 94aUB3-C6 --- not used --- 94aUB3-C7 --- not used --- 94aUB3-C8 --- not used --- 94aUB3-C9 --- not used --- 94aUB3-C12 --- not used --- 94aUB3-C14 --- not used --- 94aUB3-D3 --- not used --- 94aUB3-D10 --- not used --- 94aUB3-D12 --- not used ---

Yup. I tried. I can advance them forward, but no way of reversing them once they hit approx. 1M km/6xx,xxx miles. Pretty lame if you ask me. BTW, if anyone wants to buy a UB3 cluster that is stuck at 1M, PM me, I'll basically just charge you shipping.