Whoh there. I don't have a working empeg. I have therefore removed my empeg sled and loom and am plugging this new headunit into the ISO plug instead.

I didn't see an amp wire coming out of the headunit. Just a bunch of wires going into an ISO plug.

I guess I just need to test each of the (blue) wires coming out of the ISO plug until I find one that has 12v on it with the headunit turned on and 0v with it turned off, then just connect that wire to the loose blue one? Sounds easy enough.

Right, question 2 - I have a 4 channel amp so have 2 pairs of RCA connectors but the headunit only has a single pair. Can I just get one of these and join the front and rear's together?