obd1 converted! how do I use my A/C and heat?

Hi first time posting!
I have a 90 wagon that I bought earlier this year was running with Obd0 wiring but it was all cut up and couldn't have that

So finally when the motor blew I took it all apart to restore

went to junkyard and picked up a eg dx complete cabin/dash whole car harness lol

Well to get the point I want/need my AC and heater so my question to all of you is how do I get my ac/heater working with the obd1 wiring?

do I have to get an eg climate control?
Do I need the underdash stuff from eg(heater core, blower, etc)?
Or can I use the original underdash stuff and maybe use the eg plugs?
Keep in mind or original climate control uses cables for most of its function or is it the same in an eg?




that's all I can think of for right now.
Thanks in advance
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