Thread: turn signals and back-up lights not working - 06 tundra

My turn signals and backup lights all of a sudden are not working on my 2006 tundra 4x4. I am not sure if it is coincidence or not but I hooked up my utility trailer when I noticed it, they were working fine earlier in the day. I know that the wiring on the trailer is good because I just rewired the trailer and hooked it up once before and it all worked fine. The only difference is that I did not put the truck in gear, this time I did and now...

I had a similar problem on another truck a little while back, whenever i plugged in a trailer to the harness the back up lights would come on until the fuse popped, i found the problem to be a short in the plug on the truck that was fine without the trailer plugged in, but when it was plugged in it would short. so the hazards will work but the left or right signal by themselves would not work along with the back up lights? when you unhook the...

a good tool to have is a trailer wiring checker to determine if the problem is in the truck wiring or a problem with the trailer wiring.