I don't carry it, but I do have a multimeter that I use- or try to use anyway.
The sad fact is that I am almost 100% clueless when it comes to electrical stuff. I can swap out switches, fixtures and outlets, but that is pretty much the extent of my electrical abilities.
I have tried to use my multimeter a few times, but honestly, I don't know what to set it to and when, whether the numbers coming out of it are meaningful, or even accurate. Both as a homeowner and car guy, it's something I wish I knew more about, buy I can never seem to grasp anything more involved than the most basic circuit design.
Def