I had a DC Voltmeter and Switch at home already so I installed this on our 23ss today to monitor battery voltage. Added the switch to turn on/off the display so I can reduce battery consumption when boondocking.
Went to Home Depot today and bought 5x5 vinyl fence post, gutter, etc to install a RV sewer holder. I made a couple of hangers out of flat steel stock that I already had at home. I will install next weekend.
2021 F350 Lariat 7.3 4X4 w 4.30s, 2018 Wildcat 29RLX
2012 BMW G650GS, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs
Picked them up on eBay about a year ago - less than $10 including S&H for a couple of them. I installed one on my previous trailer and it was working fine.
Search for DC Voltmeter - there are quite a few sellers that ship from China, Hongkong. You can also pick up AC Voltmeters.