Cabin heater coolant diagram

[avidflyer]

I have the heater installed on my new Kitfox 4 build, and here is what I did. As the heater core has 1" fittings, I ran through the firewall, through the heater core, back out through the firewall and then to the radiator. I am using a thermobob, but rigged up something that doesn't allow the thermostat to close completely, so I'm not using the bypass line. JImChuk

[avidflyer]

A bit further along. JImChuk