[67chevy40]

I’m not sure how to wire my heater and ac with my new wiring harness. I only have one wire that says heater which I believe should go to the heater fan however the plug behind the controls is burned and needs to be redone. I no longer have the ac because the owner before me took it out when he put in a bigger motor instead of the original v6. He replaced it with a v8 small block. I just need help with how to wire the switch and heater fan.
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