I'm fairly new to the hobby. I've just brought a Bally Dogies back to life and I've now started working on a Bally Sea Ray. The wiring in my Sea Ray cabinet seems much more iffy than in Dogies, and I find myself trying to track down problems by poking relays and jiggling cables and manually activating stepper solenoids, and it has made me think.
How do you deal with the risk of electrocution, and how serious is the risk? Are there any "best practices" I should know about? Are there places I shouldn't touch when the power is on? Should I try not to touch (for example) leaf switches with my bare hands? Should I refrain from licking the transformer?