Ok, I have been searching the forums and the web for several weeks, and I have become confused. First off my current config:

2006 Ram 2500 Quad 4X4 diesel
Factory AM/FM/Sirius/single CD head unit (Standard 4-speaker Audio system)

I am going to install the pioneer avic-z2 system.

I bought the Metra kit (99-6510), and that looks as if it will work fine.
I am also going to buy the nav bezel from dodge.

Where I get confused is the wire harness. It looks like the one I need is metra (XSVI-6502), but the confusing part is the VSS, Backup light, and parking break light wires. Do I need to wire these myself to the Z2, or does the metra harness have those wires included, or is there another wire harness out there that will be easier. I was looking at buying the metra CHTO-01 can-bus adapter, but the retail sites I have gone to have indicated that it wont work on my truck (if this is false, that would be much easier).

Any help is greatly appreciated, as I would like to get this installed in the next few weeks.

Thanks.