Installing cruise control

I have an 01 Ram Van that I want to put the factory cruise on. Trying to go the right way. Other than then the usual parts, vacuum piece, steering wheel controls and numerous hoses-cables, what other electrical parts-conections will I need? I'll look for a van (or truck) in the pick-a-part for the componites. Thanks in advance.

Can't say for certain on an 01, however on the earlier EFI'd mopars the vehicles sold without cruise also had it disabled in the ECM so hook everything up even though the plugs were already there and it still wouldn't work. Not sure if or when the stupidity went away.