Thanks Royce and Terry,
Darkness descended upon us before we could continue tracing this problem further. It appears that a PO did a LOT of re-wiring, some of it seemingly bizaare.
So, we do have a fuse block and a couple of wiring harnesses up in the front dinette area, problem is with new wires all over it is tough to tell for sure which is what. (Lights are wired with red at the back, don't know if that is original. Need to map all the wires out.)
So, where does the wire route before it runs through the ceiling, does it at some point run across the top and down to the block at the front street side, or does it go down the wall and under? Or perhaps neither of those is the correct guess...
Anyway, will see if we can do some additional invesitgation tomorrow... thanks again for the input! Appreciate it.
"Airabelle" - '66 Overlander International 26'
"Mod-Pod" - '77 Argosy Minuet 6.0