@patoz, @RIrenze, @Coachgeo
Thanks for your review and help; Pls advise if I’m specific enough.
Working in the module on shore power, I let the cab buzzer go off for about 30 mins —dunno why— (tapping my foot to imagined beats?), after which it stopped with a distant click (sounded from the rightofcenter)—- and my interior lights came on! Whaaaa?
I checked the inverter ON, all the ActionArea working, so I welcomed the fan blower since the heat/humidity was up, even at 8pm in mid-Georgia rain. OK, mebbe I sweat easily.
This worked for two hours— to my joy, tho I knew it wasn’t cured— then slowly faded— as if the batteries were going low— tho it was still on ShorePower. I noted that Converter/Charger was not feeding batts, so I assume they remained fully-charged. I turned *most of load off, went to the cab console, and with the BatteryCutoff still ON, turned the ConsoleMaster OFF. When I turned the ConsoleMaster ON again, heard the same click at the back of the console, and the buzzer sounded again as before, with all module power inoperable.
Any idea which link in this complex DC system *could behave in such a way? It’s not in the Inverter, which seems to check out by lights as in the manual.
The huge Andersen fuse in the console IS inline FROM the battery cutoff switch TO the module, and is intact. I’m only *assuming that the huge console SHUNT is passive FROM batt post TO the battery cutoff switch.
I’m thinking intermittent relay (partial fail or melted), bad connection, bad wire, faulty ground. Rechecked all grounds; I see no relays in area of the click, but I’ll unplug and replug everything.
I’m going to visually check wiring (for grounding as it goes thru the wall at rear of console) next, but it’s very tight. I’ll also cap any open wires I can find that may have been cut upon d/c.
Do you think I’m to be looking for something within the harnesses?
I can borrow a ProbeIIIMaster for circuit testing (if only I knew which), tho my electrical experience is (obviously) v limited.
It’s gotta be inline with the DC main feed to the module, right? (Tho console “DoorAjar”, etc *can flash). Have you ever seen an override circuit relay to the module DC power circuit FROM the module?
Tho nothing looks awry when I’m looking in ElectPanel, it did *sound like a relay. I’ll test the ones I find (with batts disconnected). Of course, an intermittent, grounded, open, or broken wire could make a governing relay close intermittently, but seems this one would *hafta be a LARGE wire/cable.
ElectricalGremlins are daunting, especially without a wiring diagram.
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