There is a design flaw in Jeep Cherokee tail/brake/turn signal lights as far as I can tell. They tend to be on the left side, too, oddly enough. I've seen a ton of message boards to support this when my left lights went out. I even have a habit now of looking at all the tail lights as I pass them now. I'd say a good 10-15% don't have left tail lights! bad wiring or something most people said on the message boards.
The problem is the reverse light switch. It is located on the top of the transmission that should sloved your problem.
the reverse switch in the transmission
Try bypassing the reverse light switch that plugs into the transmission. If your reverse lights come on, voila! Problem solved. Buy a new switch.
Replace the bulb first, if this does not work try the reverse switch.
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 to replace the lights first. If they still don't work check the fuse. If that is good, it is most likely your back up light switch which is on the transmission(this is most likely your problem since both lights are out).
you have a short in light switch replace light switch
by going to a body shop
there is no fuse for the reverse lights check the netural safety switch it may be out of adjustment or shorted.
On my 98 A4 1.8T I had the same problem. The problem was the entire headlight switch on the stearing column went bad. I dont know if the headlight switch has anything to do with the reverse lights but from my own experience the reverse light problem is caused by thhe reverse light switch which is in the gearbox. I got a price of
The headlights are on a separate circuit. Check the fuses and if that's not the problem check the headlight switch. You may need to get into the vehicle and trace back the wire that provides power to the faulty circuit. Remember to not replace parts until you've found a real problem and you've been able to verify the problem through testing the part.
No problem, bring it in first thing in the morning and i will get right on it......