Recommended Trailer Wiring On A 2002 Ford Excursion

Question:

need to add wiring on my excusrion. my trailer has a 4 pole plug but has 5 wires coming from it. what do i need to get?

asked by: Jim

Expert Reply:

We would be more than happy to assist you with this question. If your wiring for your 2002 Ford Excursion, and it does not have a factory 7-way connection, you will need the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector Item # 118344. This T-One connector plugs directly into your vehicle's existing wiring, no cutting, splicing or tapping required.

This custom-fit T-One connector plugs into your Ford Excursion's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove either the tail light assemblies or interior trim panels to access this harness (diagram below). It is recommended that you use a small amount of grease # 11755 on all electrical connections, the plugs on your automobile and the 4-pole connector itself to help prevent corrosion.

The reason you have a 4 pole plug but has 5 wires coming from it is because you have a second running light wire. There is one wire for ground, one for the left side brake and turn signals, one for right side brake and turn signals, and then two wires for the running lights. There are two running light wires so they can be run down opposite sides of the trailer to power the running lights on each side.

Just plug your new 4 -way flat connection to the trailer, test the lights and functions before operating and you will be all set.

expert reply by: Timothy G