They are all going to be hooked up, DIY 4x4 Dash has all the items to hock up the A/C and Heating. $x4 controls, was Bills work, he came up with a new linkage.
Soon as he is finally done, we start re wiring the the whole Blazer, new looms, I just not going to trust 30 year old wiring plus with all modifications I noticed there has been some cutting and splicing of wires , nothing worse than being stranded with an electrical problem.