I posted this earlier in the A/V section, but with no luck so mabye yall may be able to help me: I just bought my iPod today and tomorrow I plan on installing the adapter to play it through my pioneer head unit and I was wondering if anyone could tell me where to hookup the 12v (yellow) wire to. ive installed a bunch of sytems, but only speakers, decks, and amps. it hooks up just like a cd changer but since ive never put one in, i dont know if i have to hook it to the battery or wire it up somewhere else. any help would be greatly appreciated.