Did you check the light bulbs? If OK, probably a bad reverse light switch in tranny.
Bad bulbs can be the cause of your reverse lights not working on your 1999 Toyota Tacoma. A problem with the reverse switch or bad wires can also be the cause of your reverse lights not working.
try the neutral safety switch
A loose wire can cause a radio to stop working in a 2008 Jeep Wrangler. A blown fuse is another cause and can be fixed by replacing it.
If a Passat 04 TDI's indicator lights are not working, check the fuse. A blown fuse can cause the lights to stop working.
head lights won't work, no power to them, signal works , reverse lights work
Check the bulbs, then the fuse, then the switch at the pedal.
A blown fuse can cause the dashlights and taillights to stop working on a 2001 Dodge 1500.
There are several things that can cause your 2000 Cadillac dashboard lights to quit working. The most common cause is a blown fuse.
Reverse light switch bad or out of adjustment.
Fuse or windshield wiper motor.
There is a switch on the shifter or trans that turns on the lights when the vehicle is placed in reverse, it is out of adjustment or faulty. And don't forget the bulbs or fuses as a cause.
If the parking/tailight fuse is good - then it may be a bad headlight switch No tail lights but the bulbs are working? Please explain.