Actually I feel the best thing to do would be to run multiple brake wires to the trailer in multiple directions!! The power is pretty much split between the two so having a wire go along the axle will having two others go to the front should give better redundancy!!
From what I understand with what your talking about oil pan there will be only one wire going to the brakes in the end?!? Which could still cause a problem because the one that most likely will break is the one running along the axle!!
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