1997 Chevy Silverado Brake Light Circuit

JEFFREY CROOK

MEMBER
1997 CHEVROLET SILVERADO
V8
2WD
AUTOMATIC
163,500 MILES

How do I find the brake light circuit at the rear of the truck? I have a third brakelight above the rear cab window, but I want to add a third brake light to a topper at the rear above the tailgate. This topper was made before the third brakelight requirement and I have one I am installing. The wires that go to the right and left brake light recepticals are the combo brake/turn signal circuits like on trailer wiring. I do not have a dedicated brake light that I can pull from in the receptical area. If I use one of these combo circuits, the third brake light will blink when I turn on that turn signal. Is there a brake only circuit back at the tailgate, and how do I identify it easily, or do I have to go forward to the existing third brake light and run a wire to the rear of the truck?

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

You can splice into the yellow wire at the L/side socket or at the R/side dark green wire these wires powers the lower brake lights.

Was this

answer

helpful?

Yes

No

Sunday, April 12th, 2009 AT 11:39 PM

JEFFREY CROOK

MEMBER
1 POST

Please correct me if I am looking at this the wrong way! I have four wires at the socket. 1. Ground wire, 2. Running lights, 3. Back-up light, 4. Is a Brake light / combination right or left turn signal depending what side we are on! Correct? As you said, yellow on the left and green on the right! If I connect this to a THIRD and CENTER BRAKE LIGHT, it will blink when I turn on a turn signal, right if I use the green and left if I use the yellow! I do not want this light to blink. I need a DEDICATED BRAKE LIGHT CIRCUIT! Please research this issue as I believe the answer you provided is incorrect!