You need a remote wire to trigger it to turn on when the headunit comes on. All amps that I know of have this little feature. You need to check the amp for a remote wire connection. And then you need to attach that wire to the remote wire off the headunit. That will trigger the amp to turn on and off with the hu.
Let me clarify just incase, when I say remote wire, I dont mean the wired remote control for amp gain or anything like that. It is simply going to be a 16ga or similar small wire that will run from the rear of the HU to your amp. You just splice the ends, and attach one to the remote wire connection on the amp and the other attach to the remote wire on the hu. Simple
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