On my 2005 Patriot Thunder, the propane tank has an electric cut-off switch (valve) so you can turn off propane to the coach when travelling on a ferry, for example. The switch works as I used it several times last summer as we travelled thru BC and Vancouver Island. Next to the switch is a red indicator light that, of course, does not work. Does anyone know if this light is on (red) when the valve is open, or, red when the valve is closed? I haven't yet got in there with my voltmeter.