i have a 97 chevy lumina car. i have no brake lights but my 3rd brake light wrks. the pigtail for rear lights has a blur/green/blk wires on one side and blue/yellow/blk on the other. which of these wires is the brake light?

Try wiggling the turn signal switch tosee if that gets them working. Post your results here.

If wiggling the turn signal switch works, you'll have to replace the switch (not very hard). As a matter of fact the following website has step by step instructions (with pictures) on the process.

I agree with bfree. The turn signal (multi function) switch is a common problem. If you have signal going from the brake switch to the turn signal switch and not from the turn signal switch to the brake lights this is probably it. The brake switch sends signal straight to the high mount brake light but goes through the turn signal switch for the main brake lights.

Bfree,

Post the link to the site you were talking about above. The only info I have that I trust is copyrighted. The other stuff I have found that is public domain has conflicting info.

the left side should have a yellow wire (stop and turn signal power wire) and a Brown wire (tail light power); the black wire if the ground wire.

the right side should have a Green wire (stop and turn signal power wire) and a Brown wire (tail light power); the black wire if the ground wire.

check for power on the yellow and the green wires with the brake pedal depressed. if not power there, check the brake light switch pocated on the brake pedal arm. It should be adjusted so that the plunger comes out when the brake pedal is depressed and is fully pushed in when the pedal is released.

let us know what you find.

Sorry I didn't post the website last time. Here it is.

http://tss.likeabigdog.com

babydoll,

In addition to what's already been posted.

Double and triple check the grounds.
Check the sockets.
Circuit passes through multifunction switch.
Bulbs can burn out at the same time.

Let me know if you need additional help and the results of your tests.

been a while babydoll, go i t fixed yet?