I carry one of these safety checkers with me to tell if the electric wiring is correct. The only place the frame ground on the trailers is through the shore power connection cable... I got mine from LOWES...
You can plug this into the outlet and the lights on it will tell you if it is wired correctly... You may also have a bad-wired outlet in your garage or where you are picking up 120VAC...
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Google image...
Different folks take the shock differently. What you have could be very dangerous to some people... Especially small children or pet animals...
If you can't figure this out then you should get a licensed electrician to test it for you and make the proper connections...
Back in the day a lot of people would always tear out the ground pin of adapters for whatever reason haha...
Roy Ken
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