How To Wire A Relay With A Switch

So when wiring up these relays the coil wire s will connect to pins 2 7 on the socket.

How to wire a relay with a switch. Wiring with a relay allows the power to run straight from the battery through the relay mounted nearby directly to the lights. Understanding how the relay works will help with diagnosis and modifications to vehicle systems. What happens inside a relay isn t magic but it is important. See my switch terminology page for more on contact arrangements if you need to.

This video covers both 4 and 5 pin 12vdc relays. Best connections 12voltwire c. A relay can be used to power a new circuit with very little added current draw on the original wiring. How to wire a relay switch diagram wiring diagram is a simplified okay pictorial representation of an electrical circuit it shows the components of the circuit as simplified shapes and the capacity and signal connections between the devices.

In this video i show you how to wire a 12 volt automotive bosch style relay. Spdt relay switch dpdt relay switch protective relays can prevent equipment damage by detecting electrical abnormalities including overcurrent undercurrent overloads and reverse currents. The interior mounted switch only draws minimal power though the interior fuse block to activate the relay. If you do not install a relay and use a switch you could end up overheating the switch melting the wires and reducing the current that is getting to your lights making them less bright.

Pin s 1 3 as normally open pin s 1 4 as normally closed. In addition relays are also widely used to switch starting coils heating elements pilot lights and audible alarms. The other pole has. Using a relay can also shorten the distance that high current wiring needs to run.

I go over what each contact of the relay is for and. See all 8 photos. Buy relays pigtails and kits here. Pin s 8 6 as normally open pin s 8 5 as normally closed.

Instructions for wiring a standard automotive relay with descriptions of the pin out and the schematic. The positive wire coming from the electric fan will connect to one of two red wires on your relay while the negative wire needs to go to ground. The factory wiring in modern cars is light gauge and is not designed for additional loads.