Originally Posted by PatN
Having become convinced from my reading that I would rather not drive with the propane on (though I know many people do), I would like to run my 3-way fridge on battery without having to worry if I will forget to disconnect the plug to the trailer if I stop for very long. This switch does that if no motion is sensed, so I understand. I would have to have someone install it for me. No idea how to get at the wires going to the fridge. No idea even where they run.
I always tow with the fridge on DC because in my 2 PUPs the flame blows out pretty regularly when on the move. With the continuous run fridges in the PUPs, re-lighting is a manual procedure.
I've never had an issue with leaving the TV connected and the fridge on for stops as long as 90 minutes. As I near the one hour point on a stop, I'm generally getting ansy about switching over to propane. Especially since I realized the A-frame fridge (Dometic 4332, IIRC) draws 13.2 amps on DC. The A-frame does have a dual battery installation so I can power the fridge on DC for a while without taking the TV battery down very far.
If I'm on my way to a dry camp, I will switch to propane for anything more than a 5 minute stop. That's because my TV (Kia minivan) drops the charge line to 13.2V (from 13.9V) as soon as the starting battery is charged (about 5 minutes). So I can't get more than a trickle charge into the A-frame batteries for most of the drive. And I want to start a dry camp with fully charged batteries (I like my heater and water pump to work for the whole trip).
Hope this helps
2014 Rockwood A122 A-frame
2008 Hyundai Entourage minivan (re-badged Kia)
2000 Coleman Westlake PUP
1993 Ford Explorer
camping Colorado and adjacent states one weekend at a time
last trip: Palo Duro State Park, Texas
next trip: Mt Rushmore, Custer State Park