It is only two wires that can be hooked up either way as they are not polarity dependant. Go under the rv and find out where the fraying is...if you can see it. You can always use a meter to measure the impedance of each wheel magnet to see which are shorted or open.
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2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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