No brake light...

Started by TGPilot, September 10, 2004, 09:07:09 AM

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TGPilot

On my TSTE I have an issue with the right side brake light. The running lights illuminate...but the brake lights to not. The bulbs are good. Any suggestions where I should start looking? 8)

no1kicker

I would look for a wiring problem where the brake light harness starts.  Meaning where the one wire gets split to both brake lights.


former owner of a 1990 Grand Prix STE Turbo

god910

Make sure not to leave out the TSS as a possibility, Dubs are known for shitty TSS'.
1990 Turbo Grand Prix Black Sunshine
282 5 speed, Custom Chip, 1G DSM BOV, K&N on turbo, Centerforce Clutch, Accel 8.8 Wires, no kat, straight exhaust, TB bypass (200HP), Jeff-M cro$$over ;)
Jay Warfel
Muncie, IN
2nd TGP "TestBed" 90, Black JeffM TG160 & X-over, ractive filter, 15.21 @ 90 mph
2003 Sonic Yellow Subaru Impreza WRX  Turbo XS Stage 3
Perrin GT35R, 2.5 STi Block, JDM 6 speed swap underway.
Goal: 450 AWHP, mid 11's.

LukeZ34

Does you center mount stop light work?
Usually if your brake lights on the back don't work (1 or both), but the center one does, it's a problem in the turn signal switch (as Jay mentioned).
Former owner of 2 TGP's..


2006 Pontiac Grand Prix GXP -41k, Transgo Shift kit, auxiliary trans cooler, DiabloLew Tuned.

1987 Suzuki Samurai JX Tintop - Weber DGV5E carb, 2" exhaust, Calmini Header, 162k

GPChief

TGPilot,

    Did you get the lights figured out yet? I'll be back in CO next week if you need help?  (I blame Mrs GPChief for any and all problems associated with car :twisted: !!!!!!)

- Chief
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

TGPilot

I haven't even had time to look at it. Between the Daytona and Baby and Momma and Work and blah blah blah! :cry:

TGPilot

Service manual on the way...won it for $7 on ebay!! :shock:

If anyone has a clue where to look beyond the two power plugs in the right rear wheel well. I have no power for the brake lights at the plug for the right side...I do at the other plug for the left though! :roll:

SpeedDemon

check the ground (check for corrosion) on the brake light. the brake light harness should only be like 4 wires that go to a connector.

I'm looking at the wiring diagram now and it looks like the wire that goes to the brake light on that side is the dark green one use a volt meter to see if there is voltage when you press the brake pedel.

if there is then you might have a bad ground if there isn't than the wire might be grounded somewere or damaged. From the looks of the diagram the wire that goes to the brake light comes strait from the turn signal switch. So it might be the TSS if nothing else checks out.
1990 TGP: stock minus the K&N air filter and high flow cat
1999 Oldsmobile Aurora: What a step up from my 95 Monte Carlo
1967 Plymouth Belvedere II: 318 c.i., Flowmaster Exhaust, and in deserate need of new rear tires.

TGPilot

TSS to the Brake light? :shock:

LukeZ34

Yes, believe it or not, the TSS does work together with the brake lights.
The hazard switch in my old Lumina got all messed up one night. My center mount stop light would work, but the rest of the brake lights were dead. If I jiggled the hazard switch around with the brakes pressed, the rest of the lights flickered on and off.
Former owner of 2 TGP's..


2006 Pontiac Grand Prix GXP -41k, Transgo Shift kit, auxiliary trans cooler, DiabloLew Tuned.

1987 Suzuki Samurai JX Tintop - Weber DGV5E carb, 2" exhaust, Calmini Header, 162k

TGPilot

No shit! :shock:  So these cars are a 1990's wiring NIGHTMARE??!! :wink: I should have the manual here within the next couple of days so I can start playing with the schematics... 8)