Why and How to Relay Headlights
3:52
How to Wire a 5 Pin Automotive Relay. Pins 87/30/85/86/87a . Bosch Style. Fans / Fuel Pump / Lights
19:32
How to wire a Relay and Why You should use them.
7:03
How To Add Headlight Relays To Your Classic Mopar (Or Anything, Really)
20:40
HOW TO Build a DIY Four Light Headlight Relay Harness for $30 Episode 229 Autorestomod
8:08
How To Test a Relay (and How Relays Work) - in 8 minutes
8:48
How To Wire In Relay Harness For Lights, SIMPLE!
12:38
VEHICLE RELAYS - Operation & Diagnosis
11:06