The Adapter comes with a wire that hooks up to the IP-BUS on the head unit and connects to the adapter. But it also comes with a yellow wire and black wire for power/ground. What do I hook these up to? I already have my CD deck taking up the wires from my car. Can I connect both my HU and adapter to the same yellow/black wires or do I even need both wires? I know this is probably a really stupid question but any help would be greatly appreciated.