Ford Super Duty Trailer Connector Wont Power On In-Bed Fuel Transfer Pump

Published 09/22/2022

Products Featured in This Question

10 Gauge Wire - Red Primary - Per Foot

(110)

$1.64

30 amp. In-Line Circuit Breaker - Perpendicular Mount Bracket

(75)

$7.23

Question:

I have no power to the 7 way in my box. Checked fuses nothing looked bad, all tested out continuity. I checked every fuse that mentioned trailer. Any ideas?

asked by: Levi

Expert Reply:

I do have an option for you but it's probably not what you'd had hoped for. The issue you'll run into trying to use the trailer connector as a power source for your transfer tank pump is that the battery charge line circuit within the trailer connector that you want to use for power is only active while moving on most newer Ford trucks. This is by design and has been coined the "Ford Smart Tow". Therefore, you won't be able to utilize this with the transfer pump in the way you want. If you want to modify the circuit and just run your own battery charge line to the trailer connector so it's attached directly to the battery you can do so but a better option would be to just run a power wire from the transfer pump to the battery so you don't have to modify any of the existing wiring. You'll likely need some 10 Gauge Primary Wire part # DW02508-1 (per foot) and the 30 Amp In-Line Circuit Breaker part # 38630 for either option to make them work just beware of the transfer tank pump amp rating.

expert reply by: Conner L