04-29-2019, 07:44 PM
I keep both the 120v and the 12v compressor switches on all the time. As long as the 120v is working correctly, the 12v will never kick on. However, if the 120v does not operate for some reason the 12v will keep the suppy at 60 psi to operate the doors, toilets, slide seals, etc. this has saved me more than once from being completely out of air.
Mike & Jeannie Ginn
2000 Newell #555 - sold July 2020
2019 Leisure Travel Van FX model