I have a new Ram 5500 that was ordered by others and came with a full set of VSIM harnesses. http://www.rambodybuilder.com/iph/ip...hcc/phvsim.pdf
The brown harness is particularly interesting as I would love to install a hidden switch to open door locks #32 (0V negative for 500ms unlock request) ... W722 [ DG/TN ] ... but my brown harness does nothing when tagging W722 to ground. Why ship a cab & chassis with full set of harnesses if VSIM isn't part of package? Green Harness came installed others in plastic wrap with list of functions.
If VSIM isn't actually installed can the truck be retrofitted ? It would be cool to also have access to "Wig Wag" light functions.