Trailer Lights Not Working Using Curt 55367 on a 2000 Toyota Tundra

Updated 02/16/2015 | Published 02/15/2015

Products Featured in This Question

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(40)

$41.75

ModuLite Installation Wiring Kit

(22)

$21.74

Hook Probe Circuit Tester

(60)

$12.27

Question:

My wiring harness is not working. The previous owner nipped the wires at the connector to close to solder or splice and tried to hard wire it. I had to match wire to wire from connectors and twist, solder and heat shrink tubing the connections. Problem 1: I have 7 wires from the vehicle and there are 6 on the curt harness.The one that does not have a corresponding wire is the factory red wire #7, left to right, top to bottom Do I just abandon this wire? Problem 2: The battery to harness plug under the hood has no place to plug in to. Saw you tube video on this. The plug shown in the video already has something factory plugged in to it with light gauge wiring. If I need to hard wire it from the battery back to the curt harness adapter, where to I tie it in to the adapter? Right now, nothing works and am supposed to leave on a day trip outing.

asked by: Jeff B

Expert Reply:

If nothing is working, then I would first check to see if any tow package fuses or relays are missing or blown. Use the owner's manual to find all fuse/relay locations. If that is not the issue, then it sounds like the previous owner has done a number on the original set up and you may have to have Toyota replace some of the factory tow package parts.

Regarding the under-hood connection, it might already be set up from the factory (but the fuse associated with the battery feed could be blown). You could test the vehicle end wire with a circuit tester such as # PTW2993 and see if it has power (the truck may or may not have to be on).

The Curt harness # C55367 only has inputs for battery feed to power the trailer lights (which if that isn't work would be the likely reason why), turn signals, brake lights, tail lights, and ground. The factory harness probably also has a wire for either reverse lights or auxiliary power not used by the 4-Way.

If you needed to bypass the battery feed wire you would need # 118151 which comes with 20 feet of wire, a 10-amp fuse, fuse holder, and ring terminals and a butt connector. You would cut the fuse holder wire loop in the middle, attach a ring terminal to one end and that would go to the positive battery terminal. The other end of the fuse holder wire would attach to one end of the black wire.

Then you would manually run the black wire under the truck to where to have the converter mounted, avoiding areas that may pinch or burn the wire. Then you would splice the other end of the black wire to the battery feed input wire on the converter.