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How To Wire a 4 or 5 Pin Relay With a Negative Trigger Wire.

In this video, I explain why it is necessary to use a relay in a circuit. I then demonstrate how to wire a 5 pin relay with a negative trigger wire. The benefits of using a negative trigger wire on a 5 pin relay would be - one less power wire going to the relay, and not needing a power wire feeding your switch. This may be beneficial depending on what type of accessories you are wiring into your car or truck. You could use this method for a radiator fan, fuel pump, headlights fog lights, spot lights, LED lights and probably hundreds of other uses. How to wire a relay with a negative switch 00:00 Why use a relay instead of a switch? 1:00 Pin 30 + Pin 86 - Connect them both together to a fused 12V power source. 1:31 Pin 87 - Sends power out to your accessory. 1:59 Pin 85 - Connect to the switch, with the other side of the switch going to ground. Pin 30 - Incoming 12v to the relay from the battery (fused) Pin 86 - incoming 12v to the relay from the battery (fused) - Tied in with Pin 30 Pin 87 - Outgoing power from the relay to the electric accessory (lights, pump, fans, etc) Pin 85 - Negative trigger wire to turn on the relay. Should be connected to a switch. The other side of the switch should connect to a ground. Pin 87a - Empty 🔗 5 Pack of Relays: https://amzn.to/2FDvkne 🔗 10 Pack of Fuse Holders https://amzn.to/3k4vRgK 🔗 272 piece fuse variety pack https://amzn.to/3k48cNt *As an Amazon associate I earn from qualifying purchases. 🔔 Subscribe to This YouTube Channel: https://www.rattymusclecar.com/Subscribe 🔔 Follow me on Instagram: @Ratty_Muscle_Car https://www.rattymusclecar.com/Instagram 🔔 Join me on Facebook: https://www.rattymusclecar.com/Facebook Tags: #RattyMuscleCar #Automotivewiring #WiringRescue #FuelPumpRelay Please Note: This video description contains affiliate links, which means that if you click on one of the product links above, I will receive a small commission. This helps support this channel and allows me to continue to make videos like this. Thank you kindly for your support!