how do you know when your brake censor is bad


Asked by Jan 23, 2015 at 07:39 PM about the 1993 Chevrolet C/K 1500 Cheyenne Extended Cab LB RWD

Question type: Maintenance & Repair

both tailight brake lights work  but my third light doesnt  could this mean that there is a bad brake censor. or a bad ground on chasis that goes to it

3 Answers


Take light cover off and check the socket or wiring with someone holding the brake pedal down and take a Multimeter and make sure there is battery voltage going to it if there is a bad ground you won't have battery voltage but if there is battery voltage it means the bulb is bad.

1 of 1 people found this helpful.

so if its a bad ground what do i do from there


I would do a continuity test on the ground to see if there is a short or open circuit otherwise you will have to have to go to a wiring schematic. I know guys who wired the High Mount Brake Light which is the third light for their toppers would splice into their driver side brake lights.

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