I seem to think the switch is not controlled by the amp remote wires, rather that IT controls them. Since it doesn't rely on the 12V remote wires, at least one of the sources can simply not have a remote wire; hence my iPod switching install.

I don't know, though, maybe you're right. Either way, turn off one source and the other turns on. Works like a champ (unless it's improperly manufactured like two I bought recently).

Good to see you again Mike. I'm finally finishing the iPod install which you gave me electrical information for a while ago!