The switch works like any other switch excepts it passes 12vdc through a light to ground internal when it is on so you know you have power. That is the only reason there needs to be a ground on it. I will be glad to wire it up for you. I am home all weekend. Bring the spade lugs you have with it. I'll solder it all up good so all you have to do is connect to 12V and ground.
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