Hello. I installed the PA-11 VOL iPod adaptor on my 2004 V40. It connects to the ipod fine and plays the music well, but it doesn't charge the ipod. I think I tapped the wrong wire for the constant power line. I tapped into the yellow wire. Does anyone have information about which wire is the constant power wire. Is it a different gauge wire the the rest? There is a larger orange wire that I'm thinking about tapping into next. Any advice would be great. Thanks.