A few months ago i got these two old 12v computer fans rigged in the rear air vents to increase airflow through the bus. I dont have aircon or back windows that suck air through the bus, so even though it's not a lot of flow they work remarkably well and I tend to leave them running all the time.
The other night all the 12v lighting went out, but the fans were still spinning. It took a few mins for me to realise that the fans were actually blowing the other way - it was extremely gusty and the wind must have been blowing the fans so hard in the opposite direction that it blew a fuse in my solar rig. Simple fix: replace the fuse! Except I've left a bunch of my tech boxes at cia studios, and was at the beach that night so I didn't have any spares on me, grr.
A couple of years back that probably would have freaked me out, not knowing what to look for/where to start troubleshooting - even though I've been rewiring/replacing fuses on 240v plugs since I was eight. Sometimes the paralytic assumption of not-knowing overrides any attempt to just try thinking it through to see what pops up, something I've been working on trying to rewire in my own brain.
This is really just me giving myself a little pat on the back for using my brain to think it through and fix it without asking someone else for advice (albeit the next day after buying spares). I'm finding that learning #allthethings is part reading/asking questions and part trusting yourself to have the basic common sense to work it out from existing experience. It's not much, but it's a nice moment of nerd-confidence and bodes well for the inevitable bigger troubleshooting that'll come in due #buslife course.
(and, note to self: unplug 12v air vent fans when it's windy and always keep spare fuses IN THE GODDAMN BUS!)