Propane tanks

I put a gauge on each of our 2 tanks. They basically give you 3 readings - full, almost empty and empty. If I check them and see one is reading at the low end of green, I know it's gonna be empty pdq. Kinda works okay. They were on sale cheap in a store so no big loss of $$.

The factory installed the changeover valve facing to the rear and you couldn't see the indicator. I rotated it 180 degrees but the hose was a bit too short but solved that by moving the tank tray closer towards the rear of the trailer.