1989 Corvette Third Brake light
Team Owner
Joined: Sep 2003
Posts: 25,373
Likes: 2,734
This is a coupe or a 'vert? There's differences when troubleshooting. The first check for either should be at the stop light switch but then I believe I would do some things differently.
Team Owner
Joined: Sep 2003
Posts: 25,373
Likes: 2,734
There's a LIGHT BLUE wire coming off of the SLS at the brake pedal. Check that with a test light or meter, if it has power at the SLS then go to the ABS unit in the rear compartment. The LIGHT BLUE wire supplies a 12V feed to also the ABS unit so check that wire at the ABS unit also. If you have power there with the pedal depressed then the problem is between there and the lamp.
Your next check would be at the lamp connector or the ground for the lamp that is under the halo trim above the right hand seat.
I don't have an '89 FSM but I can't imagine it being any different for that lamp.
Your next check would be at the lamp connector or the ground for the lamp that is under the halo trim above the right hand seat.
I don't have an '89 FSM but I can't imagine it being any different for that lamp.
Last edited by WVZR-1; Aug 12, 2015 at 07:50 PM.
