Question about 1997 Jeep Grand Cherokee

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Trying to hook up aftermarket trailer brake controller

My local Jeep dealer tells me that all four wires should be in place somewhere under the dash. I have found the blue "brake" wire, but cannot find any other loose wires or anything that looks like an available plug in for the brake controller. Someone suggested I will have to manually run the other three wires for the controller. My owner's manual says I have a factory installed hitch with factory installed trailer wiring. Any help?

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  • Richard Scordino May 11, 2010

    Wires should be inside one of the panels on the sides in the rear?

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Sometime around 2000, GM started putting trailering pre-wire harnesses in the vehicle. Your truck may have this harness built in and would greatly simplify brake controller installation. Look under the glovebox and see if there is a wire harness tied off. There will be four wires in this harness, which should be run over to the steering column to use it. Most trailer brake controllers are compatible with this harness.
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