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Central Illinois |
Does the trailer battery charge off the the "hot' wire in your 7 pin plug? You might check the center pin in your plug if that is the case. (I think it's the center pin that is upposed to be hot.)
If that pin isn't hot, you probably need to check one of the large fuses under the hood next to the battery, (I have an '01 so this info may not apply to yours.) Mine had the large fuse taped to the (controller) harness that was in the passenger's door when the truck was new. Good luck. | |
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07 GMC 2500HD, trailer batter wont charge?
