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How To Activate 12V Trailer Charge Circuit On 2019 Ford Super Duty With Factory 7-Way


I have installed the 30 amp fuse to the number 27 spot for charging trailer battery but am not getting any power to the plug.And I have a factory installed brake control inside the cab and my truck is a 2019 F350 super duty


Expert Reply:

If you have already added the fuse and the trailer charge circuit is not activated in the 2019 Ford F-350 Super Duty with factory integrated brake controller, then you want to make sure the trailer is connected and you press the brake according to a Ford Service Bulletin on their factory integrated brake control with trailer module 12V charging system.

There may also be a dash setting to activate the tow/haul mode on the 7-way before the 12V output is activated.

expert reply by:
Heather A

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