I recently bought a 20 foot gooseneck trailer to pull my truck around as well as for utility useage. The wiring on the trailer was really sorry. Even though all the lights were good, only one worked. There were scotch locks everywhere. I ripped it all out and started fresh with 18 gage wire I had laying around. The only part I'm unsure of is the wiring for the electric brakes. I have 2 white wires coming from each brake and I have no idea what to hook each one to. Neither of the wires has continuity to ground. I think that one of them needs power and one needs ground and that it doesn't matter which one is which. Am I right?