Tinyandthegang wrote:
The problem is not in your coach but in the ground to the toad lighting.
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Check the ground wire at the plug to the coach. All the symptoms point to a bad ground on your magnetic lights. Also, you might check by rigging a separate ground wire from the ground wire on your tow lights directly to coach chassis. I would spice in a test wire near the lights themselves and run to the coach just to eliminate an internal break in the wire. The wiring on those magnetic lights take a beating. Just some other suggestions to try....