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Title: I'm afraid it's a piece of junk
Review: Every time I'd try to plug it in, the round metal contacts on the round connector end would push back inside the plug and I had to take the thing apart with a screwdriver to push them back into position, but they just did it again. Maybe it'd work if you had a connection that is new and perfect, however I suspect most people looking for a four round adapter has an old pickup, RV, van or car that has an old corroded 4 round connector in back and this seems like the best way to go. I would recommend finding a different product or just take the time to re-wire your connection for 4 flat and leave it. That's what I wound up having to do.
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