I'm putting the finishing touches on my engine swap - still a few days of work left.
I have a question about the heater circulation pump. I had one previously with the webasto but all of that came out as a unit in transition from gas to diesel. I was thinking I'd skip adding a pump but Steve Smith has one and I don't want to be out done
I have wiring diagrams for the 280GE and for the 300GD but don't see any reference to it. It's also missing from the donor 300TD wiring diagrams.
Here's my assumption:
Running power is fed to switch on the heater valve.
This in turn powers (directly or via relay?) the circulation pump.
So I assume that with engine on and heater valve open, pump is running.
Am I thinking it out correctly?
Do I need a relay to power the pump?