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Wiring Diagram for 1989 cutlass supreme


CutlassHL59

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  • 5 years later...

:frown:

 

Ok guys, I realize that this is an old thread, but the answers here have been a bit... Atrosious. I know exactly what this guy means because I too have a 1989 Oldsmobile Cutlass Supreme SL with steering wheel controls and have a few questions about the audio wiring myself because, in this particular year, it's not normal, and, in my case, the previous owner, like an idiot, cut off all of the plugs. Now, we know for a fact to start with, that the car has the same basic wiring and colors as all GM vehicles for which I have listed these below:

 

Orange = Memory - 12v Battery Constant.

Yellow = Ignition/ACC Power On.

Pink = Power Antenna.

Black/Blue stripe = Main Ground.

Grey = Radio general Illumination and Dimmer.

Black = Dimmer Ground (usually not required).

Brown/White = Pulse or Display Dimmer.

Dark Green = E&C Data Bus (Also Is sterring Wheel Controls for older GEN 1 W-body Vehicles and radios).

Tan = Left Front +

Grey = Left Front -

Light Green = Right Front +

Dark Green = Right Front -

Brown = Left Rear +

Yellow = Left Rear -

Light Blue = Right Rear -

Dark Blue = Right Rear +

 

Extended Wires:

 

Bright Yellow = Digital Dash Dimmer/Illumination (Can be combined with either Parking/Pulse/Diisplay Dimmer, or normal Illumination Dimmer).

Purple/White Stripe = Digital Climate Control Reverse Polarity Dimmer.

 

Now right there in the above is the typical wire colors indigenous to almost every GM vehicle.

 

Thank you.

Edited by Starflare5
More wires identified.
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