‘49 Chevy 3800. Has the fresh air heater. The heater has water inlet and outlet, water pump and thermostat housing has outlets and the heater valve has inlet and outlet. My question is how is all of this plumbed together. Truck came to me with all of this unhooked and I’ve searched high and low for the diagram but no luck. Can someone please provide a schematic for hooking all this up? Thanks much!
