Most trailer axles run the wires inside the tube. I prefer to run separate pairs to each brake from the junction box. My brakes work much better with the grounds hard wired all the way.
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02 Saturn L200 5 speed- soon to be a B207R and f40 6 speed. Almost 250k
84 Gmc 6.5 na diesel K30 4x4, TMU
2006 Lincoln Navigator, 200k+
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