Your F-150 should have come with a relay and fuse to power the connection, which charges your battery while the trailer is connected and the engine is on. I found them in a small bag in the glove box. My dealer installed no charge during regular service. However, I am sure it is not difficult and you could perform the task yourself if you have the parts.
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2013 Keystone Bullet 281 BHS
2012 Ford F-150
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