Mystery Wires above transfer case

[NJPShorelife]

Hey Guys,
New to the forum and newbie to working on the M998 platform. I am putting together the check list of "to do's" before the arrival of the truck and the forum has so far been a tremendous source. Can't wait till I really get in the mix.
Who can tell me what these loose connections hanging above the transfer case are to?

 

[snowtrac nome]

transfercase upgrade your older 998 doesn't have a high lock indicator light which is what those wires are for