The backup lights are on a separate circuit from the brake lights and each use a separate dedicated switch to control when each group of lights turn on and off.
The type and location of the backup light switch depends on the make, model, and year of production of a vehicle, and since I'm not familiar with your vehicle, this answer of necessity will be generic in nature.
The backup light switch is usually mounted either within the dashboard or, in the engine compartment. In either case, it will be mounted directly adjacent to a moving part of the gear shift mechanism. Thus when the transmission is shifted into reverse, the moving linkage will move the switch, turning the backup lights on.
However, on many later model vehicles, the backup light switch may be mounted by screwing into the side of the transmission so that when the transmission is shifted into reverse, the backup lights are turned on.
In the case of the switch mounted in the dashboard area or engine compartment and working off of the movement of the transmission shift linkage, the cause of failure to operate could be:
These same causes are true for brake light switches mounted into the side of a transmission, except that I'm not aware of them being adjustable and thus if the switch is the cause it's defective and replacement of the switch is required.
Blown fuse or defective brake light switch.
Defective or misaligned brake light switch.
The whole turn signal arm unit needs to be replaced
The brake lights may not work on a 1993 Honda Prelude if the brake light switch is no longer working. The brake light switch is in the steering column just above where the brake pedal is bolted to it. There is also a chance that a brake light fuse is blown.
Start with checking the fuses and bulbs. See sources and related links below for bulb information.
To be more specific, the ground wire must work and the bulbs, fuses, etc.. Or the back up lights and turn signals and brake lights wouldn't work? Right? Could it be the back panel...and still let the brake/turn/backup lights work? I need help fast. Thanks!
Hey E==The running lights have a module which may be bad. Good luckJoe
Check to see if any are blown and replace
The backup lights are a different bulb, then the turn signals and brake lights and The Number 1 reason would be that the bulbs are burned out and need replaced. Good Luck and Remember.Change Your Mind, Not Your Oil.Use the First In Synthetic Motor Oil's.See My Bio For Information & Contact Details.
Shoot yourself.
my back brake lights don't work, but the brake light on the back door does what could be wrong
As in electrically hot? Because the brake lights are required or were required to work with the key off.