Automotive Relays Explained

Understand what a relay actually is, how it works, why cars use them, when you need one, and how to wire one correctly. And I’ll also show you how to avoid the cheap junk relays that fail early, and what to buy instead. What It Is & How It Works. How To Wire A Relay. Where To Buy A Relay. How To Size Wire Gauge. Where to Buy Wire. How to Size Fuses For A Relay.