I have a 99 Tacoma and the running lights have stopped working. The brake lights still work; I've replaced the bulbs and checked the fuses and they're still not working.

Try disconnecting both tail lights replace the fuse and see if it blows...if it don't connect one at a time and see what happens...also check you third brake light...

put a prybar between seat and brake pedal and use a test light on the wire in trunk where bulbs are sometimes bulbs look good but aren't or you got wrong bulb. a test light will verify that and make sure test light lights

I would go with your boyfriend on the bulbs. Get new bulbs and if they still don't work then check the fuses. If neither of those get them working it might be something in the wiring / connections. Good luck.

There is a relay for the stop lamp in the fuse panel under the hood. Have marked its location in the picture for you. I would check and/or try that befoire I would start messing with wiring. Hope this helped....

try cheaking the light switch its self may be faulty not normally a relay for but it shold tell you on fuse box which relay runs light ign ect

Did you check light bulbs ?

I had this problem, and to be honest, it happened to the left side about a week later...it's the board that the bulbs plug into...it's a very common problem with this model. So popular that you can normally get the socket board off the shelf at a parts store! it's extremely simple to replace, and I replaced all the bulbs at the same time!

on chrysler products the third brake light is run independant of the body control module, try checking the fuses that run the brake lights and see if any are faulty if not check you have voltage at the switch and a signal getting to the lights.

check the relays for the lights, and check the fuse again, make sure the bulbs are all good

If the driver's side tail light is working, it's not a fuse. Use a test light to check for power at the bulb holder. One terminal will be for tail light, the other for brake/turn light. If the is constant power for tail light, replace bulb. If no power, trace wiring from bulb holder to driver's side junction. Probable broken wire between the two tail lights.