Troubleshooting Brake Controller Wiring on 2012 Ford E350
Updated 05/05/2020 | Published 05/04/2020
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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.
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on Trailer Brake Controller
