I have a Kenwood KDC-315s head unit in my toyota tacoma pickup. I'm looking for a simple solution to connect my ipod to the unit. The head unit supports a cd changer, and according to the user manual there is a disc changer control input.

I'm planning on buying the following input adapter from crutchfield when it becomes available. Is this the cable I need to connect my ipod to the head unit? Is there anything else I will need for this?