Question 12V not working

[kjjones]

Just got a 2013 Clipper (yay!) that had been sitting outside for a few years. Put on new tires - one of the originals blew out on the drive home! Charged up the battery, got a new propane tank, and replacing the original and expired alarms. Other than some mildew awaiting a power washer and/or really stiff brush she cleaned up very nicely.
I did find that the Dometic refrigerator did not come on with 12V selected, the overhead light did not come on, and the water pump didn't work either. All work fine when the trailer is plugged in to 120V, even with the fridge still switched to 12V. What could cause this?
I also checked the 12V reverse polarity fuse which was good and sparked when I reinserted it. Not sure what else to check before tearing into the wiring. Help!

Ken

 

[John&Andrea]

I’m not aware of a 12v setting on the fridge. The TT and fifth wheel we had was 120v and propane. The 12v setting likely is propane, you need 12v power for it to work as well as propane.

 

[kjjones]

I’m not aware of a 12v setting on the fridge. The TT and fifth wheel we had was 120v and propane. The 12v setting likely is propane, you need 12v power for it to work as well as propane.

It has a 110V switch, a 12V switch, a propane valve, and a sticker warning to not use more than one power source. I know 3-ways are old style as 12V is pretty inefficient, I was kinda surprised to see it. My 2016 Passport has a 2-way fridge.