Trailer 7 round has dead 12v charge line - Ford Powerstroke Diesel Forum
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Old 04-14-2008, 10:15 AM
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Trailer 7 round has dead 12v charge line

My F450 with the camper pkg is supposed to have the 12v aux wire hot for charging a trailer when hooked up and the key on, but it's dead. One of the guys at the dealer said I need to install a fuse for this, but the book doesn't mention that.
Anybody know what I need to do?
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Old 04-14-2008, 10:38 AM
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I belive there is a space in the fuse box under the hood for it. My truck came with a kit in the glove box to put in some relays and fuses for the trailer hitch.
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