In the pin box is a junction box where the pigtail starts. I had mine apart last year and had to retighten all the connections. I was loosing my brakes every so often. It was a loose connection, and you might have one too??
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2013 Tiffin Allegro 34 QFA
2015 Cadillac SRX (towed)
2019 Tesla Model X
1991 Avanti Conv
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