The harness (from the Metra supplier) is called 70-1720T. Thats for a harness you plug into the vehicles existing plug and you have raw wires to solder to the CD player's specific harness. If you don't want to solder, there are smart harnesses available which are simply plug and play. I don't know if its available for that particular harness, but if it is, the part number is 80-1720T. You get the brand specific smart harness for whatever CD player you have, plug the two harnesses together, and one end into the car harness, one end into the CD player...DONE! That's the easiest way to do it, however some people say the smart harnesses go bad more frequently than if you were to solder together your own harness.