It has 2 terminals and 4 connectors and you can look at the DPDT relay as the equivalent of 2 Single Pole Double Throw SPDT relays. DPDT relay applications 1. Change motor direction with DPDT relay.

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 ...

The diagrams and photos show how to wire up the fuel pump and oil-pressure switch to a commonly available, industry standard, ISO-type "1 Form C single pole/double throw" (SPDT) relay.

This can help to isolate the problem to the power supply, the control circuit, or the motor itself. In Part 2, we’ll address reading basic to more complex control circuit diagrams and show you how to ...