crazyjc15

dose anyone out there have a wiring diagram for an 87 GTA with Digital dash?

im trying to figure out why none my taillights don't work and the wiring is all kinds of weird.

here's what i got so far,
the light in the hatch works fine. but no power at the actual back lights.

there is power going in and coming out of the brake switch. according to the diagrams i have, there should be a light blue wire running straight from there to the taillights. but instead, the light blue wire goes threw a connector and turns white, and from there instead of going towards the back, it goes up into the dash somewhere.

out at the taillights, there is no light blue wire or even a white wire. (only looking at the driver side right now) but there are yellow and purple wires. the light green for the reverse lights is the only thing that matches my diagram.

im missing something i just know it.

NINÅ

John in RI

iTrader: (167)

Seems like your reading a wiring schematic for a Firebird rather than the digiital dash Trans AM.

My 88 GTA (Digital Dash) has Purple wires @ the tail light harness. The purple wire appears to feed power to the LH rear lights. The wires feeding the RH rear lights should be Brown/White.

The Digital Dash Trans AM / GTA has Yellow (Left hand) & the Dark Green (Right hand) wires for the turn/stop Lights.

** On Firebird with Digital Dash,..... LIGHT BLUE wires feeds all the Brake lights in the rear !

NINÅ

John in RI

iTrader: (167)

I saw where you were leading him NINA,.... He was chasing a Blue wire to the tail lights & I was pointing out the fact that there should be no Blue wires in his tail-light harness and that he might be looking at the wrong schematic.

crazyjc15; Your title says tail lights,... but your describing problem with the stop lights.

The TAIL LIGHTS on your car get power thru the PURPLE wires on the Left and the BROWN/WHITE wires on the Right. (black = ground )

The STOP LIGHTS on your car get power thru the YELLOW wires on the Left and DARK GREEN wires on the Right. (black = ground)

The white wire you were chasing off the brake switch leads up into the steering column to the TURN/HAZARD switch, as NINA describes.....

Here are a few schematics covering the 88 GTA that seem to match your car better than what your working with at the moment.

( click the link for FULL SIZED pics. )

TAIL LIGHTS :




STOP LIGHTS



Short answer:
If your getting power thru WHITE, but no power thru YELLOW when the brake switch is closed,.. the TURN/HAZARD switch is suspect.

ikeepitreelz

hey guys i know this is an old thread but i had a question, my 88 GTA every time i pop up my headlights i get a warning but yet the headlight is fine. it does it sometimes. what could it be? how does the message center determine if something is bad. i tried cleaning the connectors but nothing.