How to Add a 7-Way and 4-Way Connector to a 1994 Ford F-250 or F-350

Published 04/15/2022

Products Featured in This Question

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

(35)

$32.24

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

(3447)

$118.16

Question:

On a 7way plug pkus a 4way how is the wireing

asked by: Tracy L

Expert Reply:

The wiring is great! To add a 7-way and a 4-way connector to your 1994 Ford F-250 or F-350 you will need two separate wiring harnesses. The first is the Curt T-Connector Vehicle Wiring Harness item # C55316 you were looking at. This custom fit wiring harness is a plug and play style of adapter. This custom-fit T-connector plugs into your Ford's wiring harness, which is located behind the rear bumper, along the driver's-side frame rail. You won't have to cut or splice into any wires. This harness will provide you with a 4-way connector. I have attached a picture below that will show you where to look behind your bumper.

The second harness you will need is the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires item # ETBC7. The kit includes a pre-wired 7- and 4-way trailer connector that mounts easily at the rear of your Ford with an included bracket. This kit is designed for use on a vehicle with an existing 4-way flat trailer connector and plugs directly into it. You will then connect the blue wire to the blue wire on the brake controller, connect the black wire to the positive post on your battery, the white wire to a suitable ground, and the yellow wire to your Ford's reverse circuit if applicable. This will provide you with the ability to control your trailer's brakes and also provide you with a 12v power wire for you trailer's accessory lights.

expert reply by: Jerred H