Haha THAT's what my problem was, need to get rid of this speaker wire! :dammit:
J/K no I was wondering because the battery that my winch runs off of is dead (~10v) and the winch won't work at all when the truck is off (with only power from the back battery). I was just trying to work out why the winch doesn't even run a little bit when the truck is off since it's wired directly to the back (dead) battery. I guess you're theory of internal electronics must be right.
So then hypothetically, when I get a new battery to replace that battery, the winch should work even with the truck off? Not that I would be doing much winching with the truck off (I don't need that lecture lol), but the winch controls the rear tire carrier's up and down movement, which a new battery should be able to handle on it's own. For short, light runs I would think so... It's hard to know for sure what the original installer did. If it doesn't run 'engine-off' by design, it could be modded to run with the engine off (even though you won't run it that way often). It's unlikely that it's wired that way IMHO.