SOLvED (See below and whole thread) Help! I took out my 2002 Rockwood Popup with a Centurion Converter this weekend and there was suddenly no power from the battery. Was fine last month and every other time. Zero power. Not even the CO detector has power. Help me diagnose please? Diagnostics: · Kitchen is up, kill switch is not depressed, tapped it anyway, not it (also see readings below to confirm I think it is working) · 6 mth old battery that I bought and have cared for on a trickle charge, multimeter says its fine 12.8 · Replaced inline battery fuse at Positive terminal – not it · Flipped the AC breakers just in case – not it (although I have only run it on plug in power once last year, I only use battery and dry camp usually) · And no reverse polarity issues, at least anytime in the last few months, I know which is which · Replaced all converter fuses in front – not it · Reset GFCI test/reset – not it · Multimeter Readings: o MAIN: Black pos wire from battery comes up into cabin, connects to red wire via wire nut bundle, fuse hole reading is 12.8 – good o PUMP: 0 Voltage here with main fuse in – bad o LIGHTS: 0.87 voltage - bad, if I tap the kill switch, this goes to 0, so I think the kill switch is operating fine o ACCESS: 1.1 voltage - bad o (note yes I see that the fuses put in there by previous owner are larger than rating, so I put in 10A fuse to replace it as that was the closest to 8 I have on hand. No change) What does all this + sudden issue mean? I would hate to replace the converter to then find out it wasn’t the issue… SOLVED: Yay! The winner was replacing the wire from the positive battery terminal to the converter with a new in-line fuse connection as well. The delay over the last two days was the "Amazon prime" two day delay for parts. I spent some time today tidying up the grounds with a bus bar, and reconnecting the AC side should I ever need it. Through this process I took a crash course on camper electricity and feel like I could even take on some of those mods that I was afraid to previously. I want to THANK all of you for being my tutors and having patience and providing ideas through this. For future readers with this problem: Because my tow vehicle connection was set up to charge the battery I think my first step should have been plugging it into that to see if the problem was with the converter. Then it should've been hooking up the converter directly to the battery with an in-line fuse to see if that solves the problem. I think those would've been the best ways to figure out whether the problem was in a circuit like a light or in the converter or in the wiring from the battery to the converter. Thanks again everyone!