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Message: <blockquote data-quote="rebel842001" data-source="post: 1178207" data-attributes="member: 18161"><p>yes there was a black and white wire for amp ground from the main plug and also a amp ground one the plug with the rca cables and I wired thoses wires together. I figured the ground was running through the factory headunit from one plug to the other so they needed to be wired together in order for the amps to turn on.  I can play with the sub output on the headunit and hear the subs change as I change settings so Im pretty sure the amps got to be turning on.   Ive completely redone the sound system in my truck with about 2g worth of equipment from headunit to amps caps and all door speakers and subs, but this is the first ive messed with a factory system with amps and subs. So im kind of in unfamiliar territory with this headunit install</p></blockquote><p></p>