Derale Performance, Los Angeles, 800.421.6288 www.derale.comCA
Warning: Installation of accessories should only be undertaken by those with mechanical knowledge and are familiar with working on
vehicles. Always use eye protection (goggles, safety glasses or shield). Park the vehicle in a well lit area, on level ground and apply the
parking brake. Only work on a cold vehicle that has been sitting overnight, failure to do so will result in severe burns and injury. Before starting
the vehicle, make sure no tools or any other items are left under hood that could interfere with or be drawn into moving parts of the engine.
Failure to follow instructions can lead to severe damage and personal injury.
6. Connect wire using the supplied Yellow Butt Connector.
Red Wire (closest to adjustment screw): To Fan #1 Positive (+) Electric Fan Lead
1. Using a Yellow Butt Connector and the supplied 10 Ga. Red Wire, connect one end of the red wire to the #1 Electric Fan positive
(+) wire.
2. Run the 10 Ga. Red Wire connected to the #1 Electric Fan positive lead to the Red Wire (closest to the adjustment screw). Cut
the wire to the appropriate length.
3. Connect wires using one of the supplied Yellow Butt Connectors.
Red Wire (furthest from adjustment screw): To Fan #2 Positive (+) Electric Fan Lead
1. Using a Yellow Butt Connector and the supplied red wire, connect one end of the 10 Ga. Red Wire to the Fan #2 (remaining fan)
positive (+) wire.
2. Run the 10 Ga. Red Wire connected to the Fan #2 positive lead to the Red Wire (furthest from the adjustment screw). Cut the
wire to the appropriate length.
3. Connect wires using one of the supplied Yellow Butt Connectors.
Black Wire (with attached ring terminal): To Chassis Ground (-)
Using Red #10 terminal connect Black Wire to a good chassis ground. The best choice is direct to the battery. ImproperNote:
grounding is the leading cause of electrical issues with vehicles. For a good connection, make sure connection clean and free
of rust and paint.
Yellow Wire: To Positive (+) 12v Ignition Source
Attach the wire harness containing the yellow and green wires to the controller in the proper orientation.
Using the supplied, attach the Yellow Wire from the harness to a positive (+) switched accessory source.Blue Wire Tap Connector
Do not attach direct to the alternator, starter or an ignition source.
Note: If the yellow wire is connected to a constant power source (battery) the electric fan will run after the vehicle is shut off and could
run down the battery.
Green Wire: Override Circuit (Optional)
The green wire is designed to work in two different configurations. When used, this will allow Electric Fan #1 to be turned on
regardless of the temperature of the thermostat as it simply overrides all other functions. If you choose to not use this option cut any
exposed copper and tape or shrink wrap the end of the wire.
1. A/C Override - Using the provided, attach the green wire to the positive lead on the compressor.Blue Wire Tap Connector A/C
2. Manual Switch Override - Attach the Green Wire to the manual switch (not provided). For Manual Switch installation always
follow manufactures instructions.
Please direct all technical questions to our Derale tech line at (800) 421-6288
WARNING DO NOT ADJUST TEMPERATURE UNTIL AFTER VEHICLE IS RUNNING: !
VEHICLE TESTING
1. Before you start the vehicle, make sure all wires are safely zip tied and away from any moving parts.
2. Start the vehicle.
3. If the Manual Override function is being used either turn on the A/C of the vehicle or flip the Manual Switch on. Electric Fan
# 1 should start running immediately.
4. Turn off the Manual Override or A/C function & allow the engine to warm up to desired operating temperature.
5. If the electric fan has not turned on, take a Screw Driver and turn the Adjustment Screw counter clockwise in small
increments until the first fan starts.
6. Allow the electric fan to run and shut off automatically, and possibly cycle on again. If the electric fan turns on too early, turn
the Adjustment Screw clockwise.
7. Once you have the fan cycling on and off using the control module, take the vehicle for a short test drive. For personal
preference, some additional adjustment may still be necessary.
8. Make sure the Rubber Adjustment Plug is securely in place.
TEMPERATURE ADJUSTMENT
1. Remove the Rubber Adjustment Plug on the Control
Module. (See Diagram #1)
Note: Each full rotation of the adjustment screw will
change the activation temperature by approx. 3 1/2°F.
2. Turn adjustment screw counter clockwise to lower the fan
turn-on temperature.
3. Turn adjustment screw clockwise to raise the fan turn-on
temperature.
4. Replace the Rubber Adjustment Plug.
RECALIBRATING THE CONTROL MODULE
1. Turn adjustment screw clockwise 22 full revolutions.
2. Turn adjustment screw counter clockwise 13 full
revolutions. This will calibrate the unit to appx. 180-190°F.
Diagram #4
Yellow
Black
Green
To 12V (+)
Switched Ignition
To Chassis
Ground (-)
Override Circuit
12V (+)
Red
Red
Fan 2 (+)
Red
Fan 1 (+)
(Closest to
Adjustment Screw)
(Furthest from
Adjustment Screw)
(Harness Side)
To Battery 12V (+)
Circuit
Breaker
AUX
BAT
