Installing a Brake Controller on a 2012 Ford F-150 with a Factory 4-Way Trailer Connector  

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Expert Reply:

Technically, installing a brake controller on a 2012 Ford F-150 with a 4-Way is a hardwire installation. But you may not have to do a complete hardwire install. If you follow your 4-Way flat wiring harness back, it should plug into another connector. This forward connector has more wires going into it than coming out. Pull back the covering to get to the wires and use a circuit tester, like # 3808 if needed, to test them. There should be a wire with 12 volt power and a another that would carry the brake controller signal.

Testing the brake output wire can be difficult. You would need to run power from where the brake controller plugs in with a separate battery to determine if it is the same wire.

This method requires less wire and less time for installation. You also should not have to add any fuses or relays to power the brake controller or 12 volt circuit on the 7-Way if those wires are present. Then you would use the brake controller you have chosen # 90195 and wiring harness # 22292.

expert reply by: Michael H

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