Coolant heater connections?

[cbvet]

I plan to put fuel burning coolant heaters on 2 trucks. A non-turbo multifuel Deuce, & a Cummins powered M813A1.
Can anyone tell me where to connect into the cooling system on these trucks?
Any help or pictures appreciated.
Eric
CBVET

 

[cranetruck]

On the multifuel, at least, the inlet is right above the water pump and the outlet is above the starter motor. That's the best I can do at the moment, the illustration in the TM is not very clear.

 

[cbvet]

Thanks Bjorn,
That gives me a starting point.
Eric