install help.. VSS 08 f250
 

I have installed the kenwood 6019 with the kna4100 nav. I think i need to hook up the VSS (variable speed wire). How do i find this on an 08 f250. Anyone know? Also is there an extenal add on for the sirius radio. doesnt seem to come up when i scroll through the menu.. and yes i am new with the kenwood model, so i am slowly learning it. Thanks for the help in advance.

I have found that the 04 models have the VSS as the grey and black wire at the radio or on the pass side wiring harness. Just wondering if that is the same for the 08's.