It appears that the 12v
power wire for my emergency brake comes from the power line that runs to the electric jack for the trailer tongue. And then single wire runs to the wheels where it is joined by another and splits to go to the back of the wheels. Do I need to scrape some insulation of the wires and test? Also if I have fryed the magnets, how do I replace them and how big a job is it? Does this effect my regular electric trailer brakes? Thanks for all the help, I am new to this and have never been very handy or mechanically inclined, but a 36yr old Airstream forces you to learn quickly.