I was just wondering if there was a way that when you switch the source off that you can also turn off the power to the remote turn on wires to turn off the amps that are hooked up to the head unit. So the unit is really off, now I know this would not allow voice guidance and phone calls to work but I wanted to know if this option was there.

Only 2 ways to do this.

1 - Toggle switch on the remote turn on wire. This will shut off the amp(s) but leave the unit powered on.

2 - Toggle switch on the red (ACC) power wire. This will shut off the unit completely and in turn the amp(s).