I have an 03 Escalade WITH the Bose system. I got a new head unit (Dual XVM296BT) and got the Metra GM11 wiring harness so I could use SWC. Can someone tell me which wires are KEY 1 and KEY 2? Although I couldn't locate the wires, I still wanted to make sure the radio worked. But when I plugged it up, the radio came on and the speakers did not. I read somewhere that I may have blew the old amp, but I plugged in the old head unit, the speakers worked just fine. Could someone lead me down a good path to start troubleshooting? I have been Googling all day and can't come up with anything. ANY help is greatly appreciated...