Location of Brake Controller Install Connector on 1994 Ford F250

Question:

Ihave a 1994 f250 diesel and im trying to find the brake port to see what plug i need

asked by: Tom L

Expert Reply:

If your truck is equipped with the factory 7-way or 4-pole trailer connector, then the brake controller install port will be present. It's usually located under the dash up and to the right of the diagnostic port. Look above and to the right of where your right knee would be if you were sitting in the driver's seat.

If you have the factory 7-way, all you'll need to do is mount the controller, and plug in the # 3035-P wiring adapter, and you'll be set. If your truck has the factory 4-pole, you'd still use the plug under the dash, but you'd also use the # 37185 adapter. The adapter would plug into the 4-pole, with 4 wires remaining. The blue and the black wire would be extended with lengths of 10 gauge wire and would connect with the blue and the orange tow package wires that end on the frame rail as shown in the photos in the help article I've linked you to. The white wire is grounded to the truck frame and the purple wire is usually tapped into the vehicle's reverse lamp circuit. If it's not needed, you can just bundle that wire up out of the way.

If you truck has no trailer connector at all, chances are there will not be the port under the dash, and the controller would need to be hardwired as shown in the instructions I've linked. You'd need the # ETBC7 brake controller install kit. The kit includes an adapter that needs to plug into a functioning 4-pole, so you can use # 118316 to provide that.

expert reply by: Mike L