I've got a restored fresh air heater into the fire truck but have not hooked up the hoses yet. Before I begin that water filled event, I'd like to see a drawing or a picture of how the hoses line up. Water pump to where vs. core to thermostat or what goes where is a better question. The truck didn’t come with a heater but it has one now.

And one more question about the heater: Where does the temperature sensor go that comes off the thermo switch?

I know these seem to be easy questions but I'm lost...and do not want to mess up the truck! So anyone have a diagram or picture that I can use as a reference?