GenVibe - Community for Pontiac Vibe Enthusiasts

I did some research on installing an aftermarket radio and took the stock radio out to have a look at the back. I have almost all the wires figured out on the 24 pin plug, but there's one plug that has 1 wire coming out and I have no idea what that's for. Any ideas? I've read somewhere that it's for turning on the factory amp, can anyone confirm that?

That is the general consensus here. The wiring diagram calls the radio output "Mute" but in a Vibe with the Moon&Tunes, I think it acts as a external amp enable

There's a pic of the Moon &Tunes pinout, it's here elsewhere somewhere, but the link eludes me, so I attached it again here. Shows the white wire you asked about as the only thing on radio connector "C2"

Thanks for the info. So what does it do exactly?