brake light wire color 70 firebird
 

which color wire in the trunk harness controls the brake lights in a 70 firebird thanks

There is no dedicated 'brake light wire' in the trunk harness. The brake light switch is wired to the turn signal switch which then sends power to the left(yellow wire) and/or right(green wire) turn signal lamps when you step on the brake pedal.

I was just trying to convert a simple wiring diagram from pdf to file to upload, not my thing. Didn't want to describe it. PM your email address and I'll send a copy.

ok thanks ...thats my issue then i dont have the turn signal
switch connected yet under the dash yet . thanks

I guess you've only just bought the car, waiting on Service Manual to arrive.