See below for an example of a relay wiring diagram. Connect relay terminal 85 to an automotive circuit breaker.
Wiring Dual Electric Fans
How to wire a car relay. Mounting the electric fan relay. Use a piece of 18 gauge primary wire with a solder less female. Instructions for wiring a standard automotive relay with descriptions of the pin out and the schematic. 12 volt relay wiring diagram bosch relay wiring diagram 5 pole fresh 5 pin relay wiring diagram inspirational pin relay wiring. The left side is the pin out of the point is sticking out from at the bottom and the the right side is showing a schematic representation of the relay circuitry. Connect relay terminal 87 to the vehicle body or battery negative terminal.
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. How to wire an electric fan with a relay on a classic car installing the thermostatic sending unit. The interior mounted switch only draws minimal power though the interior fuse block to activate the relay. Connect the circuit breakers other terminal to. Relays are used to power lights fuel pumps amplifiers car alarms and other automotive accessories. Click on the image to enlarge and then save it to your computer by right.
How to wire an automotive relay. Wiring with a relay allows the power to run straight from the battery through the relay mounted nearby directly to the lights. Assortment of 12 volt relay wiring diagram. I go over what each contact of the relay is for and how to understand the schematic that is. To wire an automotive relay make at least four connections. Connect wires to the coil of your relay.
Two wires to the coil to operate the relay itself and two wires to the relay contacts to apply power to your accessory. Buy relays pigtails and kits here. Our wiring tutorial shows you how to wire the most common relays found in automobiles. This requires two wires from each side of the coil to positive and negative voltage from your vehicles electrical system. How to wire your light using a relay the relay will have 4 points on it marked 30 87 85 and 86. This video covers both 4 and 5 pin 12vdc relays.
You also need to run either of the wires through a. That is kind of cryptic isnt it. Install the temperature controlled sending unit in one of the cooling passage. In this video i show you how to wire a 12 volt automotive bosch style relay. Where to mount the relay is up to you and painless performance supplies a. You need sufficient electrical skill to select the tools wire and connectors for the job.
The color coding on.
Gallery of How To Wire A Car Relay
