Hi there, 

I was hoping someone could help me out, with the fridge I have in my 1977 dodge sportsman based c-class. 

It has a Dometic RM36 fridge in it, and the good news is it runs great on propane, and I've got it working pretty well off of the 110 as well, but there is a fuse missing from the 12volt circuit, and I cannot for the life of me figure out what kind of fuse it is, or even the amperage it is supposed to be. 

I feel like it might be some kind of weird old fuse that isn't common anymore, if so I might change the fuse holder out, but I still need to figure out the amperage it is supposed to be.



Tags: electrical, fridge, fuse, fuses

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The fridge is probably a 3 way and the 3rd option is 12v and you're not using it. The service manual shows 9 amp draw on the 12v side of the element. A 15 amp fuse should be fine. You should only use this option while traveling.
I use to believe that 12v operation was not worth it. They never cooled well on 12v and the drain while operation reduced house battery charge potential. But, fires have occurred while traveling due to cooling core failure and hydrogen gas igniting. It seems road vibration prompts core failure while traveling and that could be a good reason to use the 12v option, especially on older units.




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