Automotive 5 Wire Relay Wiring Diagram

Output for a relay.

Automotive 5 wire relay wiring diagram. These layouts are shown on the two 5 pin relays below pin 87a not present on 4 pin relays. Automotive horn wiring diagram top rated wiring diagram car horn. You will notice that on the type b layout pins 86 and 30 are swapped over compared with the type a layout. Cat heart diagram daytonva150.

Although most relays are labeled at the bottom you can always find the 30 pin set perpendicular to pins 87 and 87a for easy identification to the power source. The automotive iso mini relays we have been looking at above are typically available in two types of pin layout designated type a and type b layouts. A relay can be used to power a new circuit with very little added current draw on the. Automotive relay wiring diagram collections of wiring diagram for drag car new relay wiring diagram best wire.

4 pin relay 4 pin relays use 2 pins 85 86 to control the coil and 2 pins 30 87 which switch power on a single circuit. The factory wiring in modern cars is light gauge and is not designed for additional loads. How to wire an automotive relay by k k. The difference between a 4 and 5 pin relay is that a 4 pin relay is used to control a single circuit whereas a 5 pin relay switches power between two circuits.

Instructions for wiring a standard automotive relay with descriptions of the pin out and the schematic. If you want a normally open relay you will wire to 87. Wiring diagram comes with several easy to follow wiring diagram guidelines. Every circuit added to a modern car should be run through an automotive relay.

Photos and graphics by kklowell. If you want a normally closed relay you will want to wire to 87a. It is intended to help all of the typical consumer in creating a proper system. 4 pole relay wiring diagram wiper wiring diagrams hubs 5 pin relay wiring diagram.