tuned
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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...