Research convinced me this is a good device so dropped $150 on a basic unit.
Unfortunately the website and instructions leave much to be desired. After much research it seems like it gets installed like this (after disconnecting power and propane etc): Please see images for clarification. One is the "block" I reference and the other I drew wires.
1. Remove 12v
battery supply from connecting block.
2. Connect 12v
battery supply to red wire on APRV
3. Connect yellow wire from APRV to where 12v
battery was connected on block.
4. Connect ground from APRV to ground on the connecting block, leaving the trailer ground connected too.
5. Connect twisted wires from APRV to sensor.
6. Install sensor as described.
It's as simple as routing power through the APRV which is a smart switch.
Does this sound like the proper way to do this?
2019 25FBQ FC with Dometic fridge.