2001 Toyota Tundra Trailer Lights Not Working

Checked trailer plug no power checked under hood 30a fuse is good trailer tow relay has no power.

2001 toyota tundra trailer lights not working. Discussion Starter 1 Feb 21 2007. In my experience of a light does not work its usually a bad ground. Left signal light stays lit on the dash and does not blink and is stuck on lit up when lights are lit.

I have 2008 tundra with no trailer park lights. I hooked up a newer trailer to my Tundra for the first time everything worked fine for about ten minutes then turning off the freeway the turn signals did not work so I checked the 20amp fuse and it was ok. The number 1 terminal white wire of your 7 pin plug should be your ground your hitch should not be your ground.

This is the first time I have come across this. We use cookies to give you the best possible experience on our website. The back left tail light is not working.

I believe the reason the fuse blew was some corrosion I found in the wiring harness extension that is tucked into the tongue of the trailer. Did you try the trick on youtube to connect the two contacts on the trailers 7-pin to turn on the lights on trailer. If it doesnt work you might have some loose connection or blown fuse on the running light circuit.

If the signals are correct going into the box you know that the truck is not the problem. I replaced the flasher relay and it. I have a 2002 Tundra with a factory installed hitch.

Also the 3rd brake light is not working either. A short would blow a fuse. When I press the brake the tail light lights up but not the 3rd brake light.