2009 - 2014 F150 Discuss the 2009, 2010, 2011, 2012, 2013 and 2014 Ford F150

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Trailer Wiring Harness

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Oct 6, 2009 | 12:44 PM

#16

F TOO FITTY

Mountain Pass

Joined: Feb 2007

Posts: 245

Likes: 1

From: Sandy, OR

Quote:

Originally Posted by v_tach

You don't need the harness with the factory TBC but you still need to install the relay and fuse IF you need the trailer battery charge circuit active.

This is absolutely correct. If you want to charge your travel trailer batteries while in tow, you need the fuse and relay installed. This enables 11.5 amps to the trailer battery charge circuit.

Page 5 of the documentation in your wiring package confirms this.

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2004, 2009, batteries, f150, f250, factory, ford, harness, plug, tbc, trailer, tralor, travel, truck, wiring

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