I have a 2014 GC Limited Diesel with tow package. Bought the truck used from a Jeep dealer. Had them install the brake control. Tested it when I got home by hooking up the trailer and dragging it halfway up the driveway. They did not include the manual. The "Gain" went up when I pushed the dial to the right but would not go down when I pushed it to the left. I was a bit frustrated so started stomping on the brake. Found that it would reset itself if I pushed the brake a few times. I thought it was some kind of Mopar way of setting brake controllers and didn't worry about it for a month. Now I need to use it so I downloaded the manual. It says "Adjust the Gain Setting to 2.0 by turning the thumbwheel left or right as needed." Am I missing something or did the dealer? (Who by the way is an hour away)
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