I bought one and sent it back because it didn't fit the car plug - or so I thought. I ordered another one from another online provider and it didn't fit either - so I suspected that I was missing something. The car connector has a cap that doesn't look like a cap. It looks like a plug. I had to take the cap off and everything fit. I installed on F150 2012. So if yours doesn't fit, see if there is a plug on the plug.
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