Question:
magnet and wiring condition after trailer brakes locked up
asked by: Tom
Expert Reply:
The magnet looks to be fine, a little dirty perhaps, but it doesn't look like the copper windings are coming through.
The melted wire though indicates that there was likely a short that caused the wire to melt. A short could have been at the magnet or the wiring to the magnet. Pinched wires or frayed copper strands touching bare metal could be the cause.
I have included a link to a help article that explains how to test the magnets.
Dexter Electric Trailer Brake Assembly - 12" - Right Hand - 6,000 lbs