I suspect a faulty ground. That is the most common cause of any 12V electrical issue. Was the trailer attached to the tow vehicle when you pulled the breakaway pin? If it was not, repeat the test when attached to the tow vehicle. Each magnet has a ground wire and a hot wire, the grounds must all be attached to the trailer battery ground, and
the umbilical cord ground wire. Each magnet should draw about 2.5-3 Amps; read this
for complete information.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"