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Dual electric fan relay wiring diagram.
This is based on the draw from the fans if the fans are larger and draw more than 15 amps each it s recommended to install a second relay kit as shown below.
And if a relay fails you will still have one fan running.
Or a single relay could be used to control both fans.
With dual cooling fans there are two methods for wiring up the relay kit.
Start your wiring project by taking both of the positive wires from the fans and run them to the yellow wires on each relay tab 87.
Primary cooling fan dual fans with dual relays single speed on off using ground switched devices only for primary activation using dual relays for two fans is not required.
It uses our 40 amp electric relay kit part number 91064044.
Or a single relay could be used to control both fans.
30 other red wire needs constant 12 volt power from the battery.
Cooling fan relay wiring diagram how to wire a fan relay hvac in dual fan relay wiring diagram image size 730 x 656 px and to view image details please click the image.
The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method.
The supplied diagram is both the most reliable and easiest method i ve found.
There are several ways that a dual fan can be wired.
For example dual thermostat switches or dual relays could be used to control each fan separately.
87 red wire connects to the positive wire on the electric fan.
Blue wire black wire to chassis ground diagram 1 kit contents qty.
However two relays will divide the load.
86 gray white wire goes to the ignition switch.
Description 2 relay wire harness 2 40 60 amp relay tools needed wire stripper crimping tool important each relay will control up to two different fans with a combined maximum draw of 25 continuous amps.
For example dual thermostat switches or dual relays could be used to control each fan separately.
Wiring dual cooling fans.
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Connect yellow and grey wires to ground.
Here is a picture gallery about dual fan relay wiring diagram complete with the description of the image please find the image you need.
Hvac fan relay wiring diagram download.
The orange wire from the a c relay goes to the 12 volt of the a c compressor clutch wire.
It uses a 40 amp electric relay and electric fan sensor.
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You could use one relay.
The fan will turn on when the a c compressor activates.
