I do see both power and ground wires coming to the fan as I cut them both from the unit to replace the entire unit I just got in the mail.
That's how I found no power to by connecting my continuity light between these two wires.
I will go look around the power box to see if there is a fuse outside of it; also near the battery
I did buy a cheap multimeter from harbor freight last year but am not so sure about choosing the settings for continuity. And even if I was able to I still cant follow the wire as its buried under the ceiling carpet and don't know where it starts.
There is a suspicious wire set that have been capped off in the rear overhead cabinet where I suspect an interior light might have been. Would this possibly have 'opened' the circuit feeding also the fan?
Hey, just looked at the cable tracker at harbor freight website and this sounds interesting.