headunit/remote turn on question

According to EIA standards (which all head units made within the last 4-5 years follow), the remote turn on wire is the blue/white wire, or if not present, then you use the solid blue wire.  Each manufacturer seems to have their own name for the remote turn on wire.  "Rem-amp", "System control", "Amp", and your "power control", just to name a few.  But they all mean the same thing.  Beware however that a lot of times ones that say "Rem-amp" will also have one called "Rem-ant" and if you don't pay attention it's easy to accidently pick that one.