Dash wiring for AC conversion...

[dasbulliwagen]

Does anyone know if the dash wiring in a non AC MJ will have all the wiring hookups for when I add the AC housing? Same question for the steering column if the wiring is already there for the intermittant wipers I want to add from the donor MJ. I know ill probably need to swap the wiper motor too for the intermittant feature, but is there anything else that may go along with that or should I just start digging through the wiring diagrams on alldata? Thanks for the help!