Adding a 7-Way Trailer Connector on a 2007 Chrysler Town and Country for Trailer Lights Only

Question:

I have a 07 town and country with a t one wireing harness I need to convert to 7 blade with the wireing adapter sold here do I need to connect the additional 4 wires or can I just use the plug and cap off the remaining wires and if so will I loose running lights and reverse lights on camper I dont have trailer brakes so not worried about that

asked by: Robert

Helpful Expert Reply:

If you use a 4- to 7-Way adapter, such as # 37185, then you will just have the lighting functions on the trailer (minus reverse lights). On the adapter, you will have to ground the white wire to the vehicle frame, otherwise it will not work.

The blue wire is for electric brakes which you said you do not need. The black wire is for 12 volt power if the trailer uses any. If those functions are not needed you can just cap off those wires and stow them out of the way.

The last wire would be for reverse lights, usually not seen on trailers. But if you need them then you would need to locate a reverse light wire behind one of the reverse light bulbs, and tap into it there.

expert reply by: Michael H