My coach mfr stated that both these sensors were REQUIRED to be hard-wired. As such, they drained my 12V starter battery (while unused) within 3-4 weeks. Mfr also stated that because they were legally required to be hard-wired,they could not tell me how to disconnect them. But...if I went to my dealer, he would be happy to install a toggle switch for them. Having a bunch of toggles in my workbench, that's what I did. So...every time I put my coach in "storage", I flip the switch, that turns these sensors off. And, every time I turn them on, I hit the "test" button(s) and I guess they still work just fine as the "test" does what the books says they should do. Since 2001.
