When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just for reference, 2 is constant battery power and both 1 and 3 are switched power. You should connect your Ipod on the radio side (as opposed to car side) of the inline fuse (or add your own fuse).