How To Wire A Relay

Use a piece of 18 gauge primary wire with a solder less female.

How to wire a relay. Pins 8 6 as normally open pins 8 5 as normally closed. This page demonstrates several simple ways to wire a relay for various applications. Connect the circuit breakers other terminal to. Diagrams will show how multiple relays one relay or another or just one relay can control your device.

This video covers both 4 and 5 pin 12vdc relays. As in the diagram a wire is run from a 12 volt power source to the switch in the cab and out to the relay placing a fuse at the source of the power. Pins 1 3 as normally open pins 1 4 as normally closed. I go over what each contact of the relay is for and how to understand the schematic that is.

See my switch terminology page for more on contact arrangements if you need to. The other pole has. In this video i show you how to wire a 12 volt automotive bosch style relay. Connect relay terminal 87 to the vehicle body or battery negative terminal.

So when wiring up these relays the coil wires will connect to pins 2 7 on the socket. All examples shown are for spdt single pole double throw relays which includes any of the 5 10 or 20 amp relays on this site. Connect relay terminal 85 to an automotive circuit breaker.