Troubleshooting without a wiring diagram is like flying blind. In this installment of Weekly Boiler Tips we cover how wiring diagrams work, the most common switches and symbols, and how to test limits ...

Achieve max electric fuel pump output and safety using a relay plus an oil pressure safety switch. Achieving maximum output and safety with a custom-wired electric fuel pump requires a properly ...

Note: this is a complicated wiring setup that requires a solid understanding of basic home electronics. Bring these cables to your switch boxes and light(s): 14/2 (black, white, ground) from panel to ...