I have a prowler travel trailer,I have power issues, all on the 110 side when plugged up works, but nothing on the 12volt side works, i checked all fuses and they are good, any clues
You have done some good work on narrowing down the problem to bats, converter or relays in the system.
Have you got a volt meter that does 120 & 12v? Have you done as the 3rd poster stated and checked input to the converter and if that is good, the output? Post the results.
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