Raspy Posted July 16, 2018 Share Posted July 16, 2018 Brakes for 7 pin connectors use a common wire (blue) for left and right brakes (returned through ground). It would be interesting to see if an 8th wire for independent control of the brakes to staighten the trailer out in a sway situation would be much better than simultaneously applying brakes on both sides. I'm convinced that a straight pull to the rear with both brakes equally applied is the best approach. Whenever one brake is applied it tends to steer the trailer and pull the rear of the truck toward that brake. So the back of the truck would be pulled left and right as each brake was applied and let go. This is practiacally the same thing that is happening during a sway event. With both brakes applied evenly and at the same time a straight rearward pull is applied and the trailer stops swaying. It's also easier to wire because you don't have to wire each brake separately. 2 John "I only exaggerate enough to compensate for being taken with a grain of salt." LE2 #92 (sold), Black Series HQ19 Link to comment Share on other sites More sharing options...
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