<b>About the Relay</b> <br>Relay is an electrical control device that usually used in automatic control circuit. <br>The relay in fact is an automatic switch which uses a smaller current to control a larger current. <br> <br><b>What's the Relay Used for</b> <br>Compatible with almost all automobiles and devices equipped with a 12V DC power supply. <br>Like starter kills, power door lock/actuator control, change a low current output to high current, add ignition/accessory outputs, <br>control motors/other electronics. It is also suitable for automobile used for control, alarms, horn, headlight and more. <br> <br><b>About the Relay Pins</b> <br>Pins 85 & 86 - are used to turn 'on' the relay. You need a positive (+) and negative (-) power source to turn on the relay. <br>- Pin 85 - is usually negative (-) <br>- Pin 86 - is usually positive (+) <br>Pin 30 - is either a (+) or (-) source that feeds Pin 87 or Pin 87a <br>Pin 87 - when the relay is 'on': Pin 30 and Pin 87 are connected <br>Pin 87a - when the relay is 'off': Pin 30 and Pin 87a are connected <br> <br><b>About the Wire harness</b> <br>Five 14AWG wires, <b>rated for 20A</b>: <br>#Black (85) – to Ground <br>#White (86) – to Switch or Trigger <br>#Blue (30)- to Battery Positive <br>#Red (87a)- Normally Closed Contact <br>#Yellow (87) - Normally Open Contact <br> <br><b>What's Note</b> <br><b>* The relay is rated for 30A, while the socket 14AWG wires are not big enough for the rated 30/40 amps.</b> <br>If you are intending to run 30 amps continuously, you could remove the spade contacts from the connector, carefully open the crimps <br>securing the wire to the contact and recrimp/solder 10 gauge wires to it. Also, you can use 6.3 mm female connectors <br>to connect directly to the relay pins. The relay should be good for 30 amps. <br> <br><b>About the Package</b> <br>2 X Relay