I just installed an isimple adapter on my 03 c5 z06. I also have the cool stream Bluetooth
adapter that plugs in to the 30pin Apple plug. I want to be able to leave the cool steam adapter connected or iPod and don't want to keep unplugging it, because I have it inside my center console and don't want to wear out hinge or the connector. I'm pretty good with soldering but I need some guidance on which wire to splice into so I can install a toggle switch so I can leave things connected and my battery doesn't drain.

Im using the PXHGM4 harness for the isimple that plugs in to the back of stock radio.

I was able to find an old thread that showed the yellow acc wire in the passenger foot well.