Flex-a-Lite 40 Electric fan for Ford Rangers & Bronco II (1984 to 1997) - Manual (Page 2)

Wiring - Diagram C
Mandatory Connections
1. Connect the “+” terminal to a 12 volt positive (+) source. (i.e. fuse box)
Note: To stop the fan unit from operating when the vehicle is shut off, attach this wire to an ignition switched 12V power
source.
2. Connect the “B” terminal to a 12 volt positive (+) power source. (i.e. battery)
3 Connect the “G” terminal to ground. (i.e. chassis, negative(-) side of battery)
4. If you have air conditioning: with 3-way connector provided, pass the A/C clutch positive(+) wire (con-
nected to the A/C pump) through the connector. Place the black wire provided into the closed end of the
connector. Crimp metal plate. Snap plastic cover into place. Attach black wire to the "C" terminal of the
control box.
Adjusting the Temperature Control
1. Turn the adjustable control knob completely clockwise.
2. Idle the vehicle, when the vehicle is at 5 to 10 degrees higher than “normal” turn the adjustable control
knob counter clockwise until the fan comes on.
3. The fan will now activate at this temperature automatically and will shut off after it has cooled the vehicle
down 7 to 11 degrees. Note: It is typical for this fan unit to cycle on and off.
Optional Connection
(Note: Based on Flex-a-lite’s manual switch part # 31148, not included)
1. Connect the “M” terminal to terminal 1 on the switch.
2. Connect terminal 2 to a 12 volt positive(+) source.
3. Attach terminal 3 to ground to illuminate the switch.
Diagram C
Mandatory Connections
+ 12 volt low amp
source
Optional Connection
M Manual switch G Ground
B 12 volt high amp
source
C Air conditioning relay
B
C M G +
In Line Fuse
12 Volt Low Amp Source
1
2
3
Ground
3-way
Connector
12 Volt Source
Ground(Illuminate switch)
Control Box
A/C Positive Lead
12 Volt Positive
*WARNING: If not using Flex-a-lite's illuminated
switch (PN #31148) you must disconnect the switch
ground.
Insert probe in radiator core near upper hose. Install rubber cap over end of probe.
Note (optional): To stop the fan from activating thermostatically, omit the lead to the positive(+)
terminal of the control box. B, G, & M must remain connected.
rev. 08-23-05 99978 page 2 of 2
The Flex-a-lite Limited Warranty
Flex-a-lite Consolidated, 7213-45th St. Ct. E. Fife, WA 98424, Telephone No. 253-922-2700, warrants to the original purchasing user, that all Flex-a-lite products to be free
of defects 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 limitation of incidental or consequential damages, so the above limitation
or exclusion may not apply to you. This warranty gives you specific legal rights 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.