engine swap A/C question (dakota)

I know this site has good info on it, and some have swapped out a 3.9 into there cars...

I'm doing an engine swap from a 2000 dodge dakota 3.9 to a 1988 dodge dakota 3.9, both have A/C and both are computer controled

I know how to get the truck running from the 2000 harness but I don't know how to control the A/C with the 2000 computer since the heater controls are likely set up much different

I'm working at getting the PIN outs on the 2000 computer, I already have the ones from the 1988