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    HDMI & 12v Power Supply coming from Fuse Panel

    So it was actually just the other end of the hdmi cable stuffed up like it had been ran to something but was unplugged. As for the other wire, I think you were right on a radar detector because it was just tapped into a 10a fuse.
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    HDMI & 12v Power Supply coming from Fuse Panel

    Hey guys, first time posting here. I bought a 2016 Chevy Duramax the other day. While looking at the truck I noticed an HDMI Cable and what appears to be a 12v power supply almost like a laptop charger coming from the fuse panel. Is this for a tuner? If so, what is the best way to figure out...