Wiring = hardest part of this entire swap, hands down.
By far the most I've researched something, looked at schematics hours on end and slowly pieced it together.
Like wiring in a sunroof - when the last vehicle didn't have a sunroof.
Current goal... get HVAC in this vehicle. Heat and fans that work... A/c will be wired in, but that can wait to be plumbed in for the spring.
The easiest way to get this to work rather than dicing and splicing I think is to strip back the entire harness and essentially have a harness dedicated to HVAC.