All of my brake lights are dead, the bulbs are good, where do I go from here?

What fuse is this under, where do all wires connected to the brake lights go to?

Thanks

 

Check the brake light switch, located on the brake pedal under the dash.

Should have power into the switch on one wire, and power out of the other wire when you press the brake pedal.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...

R.I.P. #3
"He can see air"

 

There is a brake fuse. it should be labeled "brake". that could be the cause.

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88' GTA 350 MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass

 

If you have cruise control....drive it, set the C/C, then step on the brake. If the car speeds up after you take your foot off the brake then you KNOW you have a bad brake light switch.

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92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Z28 Grille w/aftmkt fog lamps, MacEwen white-face guages
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, 3.42 gears w/Torsen posi

 

Tried that, the switch is good.

Where are the wires grounded at?

Where do they run from and through?

I think its something simple, like the ground.. I'll probly test the voltage soon too though..

So far, Switch, fuse, bulbs all good.. What else?

THis is driving me nuts..

 

If the brake fuse is bad then your rear defrost won't work either, I believe. So you can check to see that too. Have you done anything that might ground out the wire? I did a rear deck swap about a year ago and found that the wire for the third lite under the wing got grounded when my buddy clamped it under one of the washers. Dumbfuk I didn't have break lites for a week.

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You put Mt. Dew in the gas tank!?!

Wow, look at it go!

 

Turn signal switch.

Think about it - when you turn on a blinker, that rear bulb's "battery" gets changed from being supplied by the brake light switch, to being supplied by the flasher.

Do the TSs work?

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"So many Mustangs, so little time..."
ICON Motorsports

 

Your rear window defroster is unplugged!
The break signal goes throught the defroster wires. When you hit the brakes does the defroster light come up?

 

I was wondering if the turn signal switch could possibly be the cause. The turn signals stopped working on my wife's oldsmobile, and the brake lights only worked intermittently. When I replaced the turn signal switch, everything worked again. I was only expecting the turn signal situation to be fixed. Now, my cousin is having a similar problem with his TA. Could it be the same thing?

 

Turns out it was the wiring harness back behind the glove box. The black wire coming out of it was out about 1/8 of an inch. I taped it back up and it seems to be working fine now.

Thanks to all who helped.