Originally Posted by rebelone
Most likely ground problem, try a cable [booster cable ] if you have one from battery ground to car.
That solves a lot of problems!
Bought a Harbor Freight 4 X 8 utility trailer. They use the frame for a ground. My lights had crossover feedback. I ran a new ground line from the van to the lights and everything works fine.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '05 Odyssey