Fan relay hook up

fan relay hook up

How do you wire a fan relay to a fan?

There are two methods to wire the relay, one with manual control and one with automated control. Purchase a 4-post relay with a 30-amp rating. Locate the relay in immediate proximity to the fan being used. Find a spot to secure the relay with a screw or a bolt.

Where does the Red Wire connect to the cooling fan?

The red wire from our relay connects directly to the cooling fan, and the black wire from the cooling fan connects to ground, both wires will utilize our supplied fan harness. If you purchase our relay kit, all required connectors are included to splice wires together.

Do I need a temperature controlled electric fan relay kit?

While you could just wire the electric fan to run all the time, hooking it up with an electric fan relay kit that is temperature controlled—or to use the fancy term for it, thermostatically controlled—is a much better idea. Our example for todays how to lesson is MotorTrend tech center technician Christian Arrieros 1974 Plymouth Duster.

What size fuse do I need for a fan relay?

For a second relay, both gray wires can be connected to the temperature sender, and both orange wires can be connected to your 12 volt ignition source. Each relay will control a single fan, and a 30 amp fuse is recommended for each relay connection to the battery.

Can you wire an electric cooling fan with a relay?

If youve got an electric cooling fan on your classic car or hot rod and you want to know how to wire it with a relay, youve come to the right place.

How do you wire a fan to a thermostat switch?

Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. You will then need switched power usually from your ignition switch, wired to the blue wires on the relays. Next, both of the black wires from the relay can be spliced together and ran to your thermostat switch.

How do you wire a 30 amp fan relay?

Purchase a 4-post relay with a 30-amp rating. Locate the relay in immediate proximity to the fan being used. Find a spot to secure the relay with a screw or a bolt. Install a 10-gauge wire to the battery positive terminal with the use of a round electrical connector.

Where does the Red Wire connect to the cooling fan?

The red wire from our relay connects directly to the cooling fan, and the black wire from the cooling fan connects to ground, both wires will utilize our supplied fan harness. If you purchase our relay kit, all required connectors are included to splice wires together.

Do I need a relay for an electric fan?

I am running an electric fan off of a 1A toggle switch with an inline fuse. Works fine. A relay is a REALLY GOOD idea on ANY high amp draw electrical device... from Denver, CO. when I test wired my fan it worked great, then when I wired it for real I kept blowing fuses and the fan would surge. Really depends on your switch.

What size fuse for a 2 amp relay?

If each light draws 0.5a, for a total of 2 amps, you can use a 3 to 5 amp fuse. A 40 amp relay will work fine. Thank you very much.

What size fuse do I need for a 15 foot wire?

2 amps at 15 feet is calling for 12ga wire. Find the size of fuse by multiplying the amps required by the device (2) by 1.5. 2×1.25 = 2.5 then we will round up to the nearest fuse size (in multiples of 5 amps) which would call for a 5 amp fuse.

What size switch do I need to power an electric fan?

Most electric fans pull at least 15 amps, some 20 amps or more, so youll need your switch to be able to handle that load. Most parts stores carry toggle switches and/or push-pull switches that will handle anywhere from 30-60 amps, so that would work.

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