Part number 31149
Temp. Control Module
Wiring Diagram
1a. Connect the motor wires to the control module
(Red wire to the "M+" terminal and black wire to
the "M-" terminal).
1b. Disconnect the negative battery lead for
safety while finishing the wiring. Use the large
diameter red (10 AWG) wire to run power directly
from the battery positive (+) terminal to the "B"
terminal on the control module. Connect the fuse
holder in-line with this wire, as shown, but do not
insert the fuse yet. Use the yellow
female, ring, and butt connectors provided.
1c. Use the large diameter black (10 AWG) wire to
run from the negative (-) battery terminal to the "G"
terminal on the control module. Use the yellow
female connector and ring connector provided.
1d. Use the small diameter red wire (14 AWG) to connect the "+" terminal on the
control module to a positive power source.
ignition-controlled source will shut off the fan when the engine is turned
off. Attach this wire to an uninterrupted (always hot) power source to allow
the fan to continue running after the engine is shut off.
connector and fuse taps (included) if necessary.
NOTE: Attaching this wire to an
Use the blue female
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1e. (Optional) For air conditioning control (if desired) connect the "C" terminal on the control module
to the
Using a voltmeter, determine which wire coming from the compressor is the
positive
wire that triggers the A/C compressor using the small diameter green (14 AWG) wire.
positive
trigger wire. Use
the 3-way connector (included) to tap into this wire and send a signal to the fan control module. The
fan will cycle on and off with the A/C clutch when the A/C is turned on.
1f. (Optional) For manual switch operation, use Flex-a-lite p/n 31148. Connect the switch as shown
on the wiring diagram (previous page). Connect the "M" terminal on the control module to the "1"
terminal on the switch. Connect the "2" terminal on the switch to a positive 12v power source. Connect terminal "3" on the switch to a good ground (for switch illumination).
NOTE: To prevent thermostatic activation (if only manual switch operation is desired), omit the lead to the "+" terminal of the control box. "B", "G", "M+" and "M-" must remain connected. If not using a Flex-alite manual switch, do not connect a ground wire to the switch!
1g. Use the zip ties provided to secure the wires and prevent them from interfering with fan blades,
belts, and pulleys in the engine compartment. Reconnect the battery and insert the fuse provided.
Step 2: Insert the temperature probe into the radiator fins
Install temp. probe near inlet hose...
then replace the insulator cap.
Locate the inlet hose from the engine to the radiator. Remove the black insulator cap and insert the
temp. probe through the radiator fins near the inlet hose. Reinstall the black insulator cap.
Step 3: Adjust the temperature control knob on the control box
If you disconnected any hoses or drained coolant to install the fan, reconnect the hoses and refill the
radiator. Press the control knob (included in wiring kit) onto the control box shaft. Turn the knob
clockwise until it stops. Start the engine and allow it to idle. Using a hand held thermometer (positioned near the inlet hose) or the vehicle's temperature guage, monitor the temperature. When the
coolant temp. is slightly above normal (or desired temp.), turn the knob counter-clockwise just until
the fan turns on. From now on, the fan should activate at this temperature setting. Adjust as necessary to maintain desired temperature.
The Flex-a-lite Limited Warranty
Flex-a-lite Consolidated, 7213-45th St. Ct. E. Fife, WA 98424, T elephone No. 253-922-2700, warrant s to the original purchasing user , that all Flex-a-lite products to be free of defect s in material and
workmanship for a period of 365 days (1 year) from date of purchase. Flex-a-lite products failing within 365 days (1 year) from date of purchase may be returned to the factory through the point of
purchase, transportation charges prepaid. If, on inspection, cause of failure is determined to be defective material or workmanship and not by misuse, accidental or improper installation, Flex-a-lite will
replace the fan free of charge, transportation prepaid. Flex-a-lite will not be liable for incidental, progressive or consequential damages. Some states do not allow the exclusion or limit aion of
incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal right s and you may have other rights, which vary from state to state.
The Flex-a-lite warranty is in compliance with the Magnuson-Moss Warranty Act of 1975.
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