I just started a thread looking for advice with installing and engine coolant circulating heater with a 6.0 PSD. Link to thread

I'm hoping a fellow Alaskan has installed one and can offer some tips.

 

There is a shop in Anchorage that sell them; they run off your fuel system and can even get the system to heat up the inside of the truck! MGM truck is first place saw the heater, but called the dealer! Better! Will have to see if can find the paper work on it and get the name brand

 

Is it 12V or 120??? I dont need one but just curious.