BNolan12 10+ year member
CarAudio.com Elite
Well I've been out of the game for awhile now but I told my brother I would help him install a headunit in his 2010 GMC Sierra. Needless to say, it didn't go as planned. After I hooked up all power and ground wires how I thought they should be I figured I would test it before connecting the speakers but the unit didn't kick on. So I undid and reconnected everything but still nothing. I know this is a vague explanation but any help is appreciated. Btw, it is a Kenwood head unit.