I have one of these in my Jayco JayFlight. It was more than five years old and wouldn't stop beeping one day. I ordered a new one on ebay. Installed the exact same one. NO power to it. Returned it-as defective. Ordered a new one from another place. Same thing no power. This is the same connection as used from the trailer. The old one always worked.
I still have no power coming to this unit. I don't see any fuses broken at the panel. I have no idea how to make this work again? Should I just hook up a 12 volt toy battery to make it work, without using the trailer power. I have made sure I have shore power, generator power and even a new battery for the rig. What is next. This should be a no brainer?
I am very mechanically inclined and know how to do work on my trailer and other things.
What do you recommend I shall do. These buggers are expensive