Low Tech Tank Measurement?
We're the optimistically-proud owners of a pretty gently used Holiday Rambler Savoy. Granted, it's a little long in the tooth but it looks really well cared for and it seems to fit the camping we're wanting to do pretty well, for now. Then there's this problem with the tank info center; the water heater and pump rocker switches light up nicely, but the indicators for the battery and tanks won't do anything. I've taken it off the wall and checked the board for visually-obvious shorts or disconnected wires, but so far, nothing. The entire trailer underbelly is buttoned up with Lamiplast and I haven't dedicated the time to open it up to trace wires.
In the interim, I was wondering if there's a low tech method for checking the gray tank level? The black tank method seems pretty intuitive, if a little distasteful, but I'm at a loss for how to stay out of trouble with the gray. Any ideas?
Thanks, and Happy Tuesday.
2006 Holiday Rambler Savoy LX 27SKS
2017 F-250 Supercab 6.2L