Troubleshooting Brake Controller Wiring on 2012 Ford E350

Updated 05/05/2020 | Published 05/04/2020

Products Featured in This Question

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

(3470)

$118.67

Question:

so i purchased the Reese 8508211 brake controller and the 78058 wiring harness. i found the factory female connector behind the dash. i have plugged it in and there is still no power to the brake controller. is there an additional power source needed for the controller? i was under the impression that the power should be in the factory connector.

asked by: Chris S

Expert Reply:

For your 2012 Ford E350 Van, the factory tow package came with either the 4-way or the 7-way. If you had the factory 4-way, then you would need to add the # ETBC7 for the brake controller wiring. The power wire to the brake controller is needed on some but not others on the factory 4-way, and it does sound like your vehicle does even though you have the under dash connector.

If you have the factory 7-way, then you should have all the appropriate wiring so I recommend looking at fuses. The brake controller fuse is #33 inside the passenger compartment fuse panel.

expert reply by: Jason S