Not long after I began contributing to Hagerty eight years ago, I wrote a detailed four-part piece on electrical relays and how they work in cars. You can still find the articles here (Part I: Why We ...

General-purpose relays and sockets are available in octal base, square base, flange mounted, and miniature square base with pin and blade terminals (5 to 25 A) from one to four poles. A hermetically ...