Quote:
Originally Posted by J-Mech
Make sure the trailer is grounded good. Do you ground to the frame of the trailer? Is the ground on the truck side good? I always check trailers with it completely disconnected from the truck, minus the plug. That way, you know if you have a ground issue. If it's hooked up, it could ground through the ball, and you don't want that.
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I always do the same thing. I always say that you cannot overkill a ground. A ground must carry the amp load of all circuits combined. I know I am insane about connections, but I never use those crimp on or pinch on splices. I have had pretty good job security repairing those splices that fail. It is a liability issue. They should be outlawed. I always solder splices and then heat shrink the splice to seal it up. It definitely takes more time to do it this way, but the chances of a failure down the road are almost nothing. And I will repeat what Jonathan already said - there must be a proper ground through the trailer connector.