I recall being very alarmed at how far the door spring traveled. As a teenager in my first job at a dealer, I was working on a small S-10 truck that needed door hinge pin bushings. I levered that door spring out of its perch with a slotted screwdriver like a goon and...

My brother and I both work in vehicle repair, and he sure got my attention when he gave me a set of resettable blade “fuses” to try out. These devices are actually fuse-shaped circuit breakers, and my new kit of six breakers goes up to 30A in 5A increments—just right...