Roadtrek remote switches for the water heater, inverter/charger, and the patio lights has no light illumination visually reminding the user that it is on, one could easily forget to turn them off and waste valuable resources.
Rather than installing an indicator light next to the switches, I opted for illuminated switches which should be easier to install. The hard part is finding a correct size switch replacement. The
original switches dimensions are as follows: 12 mm (W) x 29 mm (L). Actual switch plate opening: 13.5 mm x 29 mm.
I got my replacement switches off EBay but the link is now dead. I searched Amazon but could not find an exact size switch, maybe you'll get better luck, look for 12-13mm wide and 28-29 mm long switch>
12-volt SPST illuminated rocker switch.
Picture below shows the newly installed illuminated switches.