Flex-a-Lite 330 User Manual
Part #330
Dual Electric Fan with
Thermostatic Control
and A/C Relay
Setting Pull or Push Configuration:
At the factory, the model 330 is assembled to pull air. To push air, remove the
clips that hold the fan blades onto the motor shaft and turn the fan blade over.
Reinstall the clips to the motor shafts. Important: See wiring diagram (next
page), correct wiring must correspond with push or pull configuration.
Installation Instructions
Through Core Mounting Instructions
(see “Diagram A”)
Step 1: Position the electric fan against the
radiator, and mark the holes for mounting. (Some
applications may have A/C condensers and/or
transmission coolers on the front of the radiator.
Additional adjustments or modifications may be
necessary for installation).
Step 2: Rotate fan blades to make sure they are
free of obstructions.
Step 3: With a small Phillips screwdriver, pass
through the marked holes, carefully spreading the
fins to allow easy passage for the nylon bolts. Pass
the bolts through the shroud holes then twist the
bolts through the radiator.
Step 4: Slide the washer onto the nylon bolt and
push on the push nuts until snug.
Diagram A
Step 5: Trim off any excess length on the nylon
bolts with a pair of side cutters, leaving about ¼”
beyond the push nut.
Rev. 03-09-12 #98330 Page 1 of 4
Wiring Instructions
Step 1: Locate mounting point for control
Locate a mounting point for control near inlet side of radiator. The control needs to be placed within
18” of radiator inlet hose. You may want to mount next to radiator on fender well. Mount the control
using the screws provided.
Step 2: Wire the fan motors (refer to wiring diagram, below)
Using the yellow butt connectors provided, attach a length of the thick (12 AWG) red wire to the black
motor wires at fan. Attach a length of the thick (12 AWG) black wire to the red motor wires at the fan.
Once the fan is in place, these will attach to the control module. If mounting the control somewhere in
the engine compartment, leave enough wire to reach the control module.
Note: Wiring for puller configuration is shown. For pusher configuration, fan blades must be flipped
over (see page 1) and wiring to motors reversed (large red to red motor wires, black to black motor
wires).
Step 3: Connect the wires crimped in Step 2 to the control module using supplied female connectors
(Red wire to the “M+” terminal and black wire to the “M-” terminal).
Step 4: Disconnect the negative battery lead for safety while finishing the wiring. Use the thick red
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
blue female, ring, and butt connectors provided.
Step 5: Use the thick black wire to run from the negative (-) battery terminal to the “G” terminal on the
control module. Use the blue female connector and ring connector provided.
Step 6: Use the thin (18 AWG) red wire to connect the “+” terminal on the control module. Connect
the other end to a positive power source. NOTE: Attaching this wire to an 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.
Use the blue female connector and fuse taps (included) if necessary.
Step 7: (Optional) For air conditioning control (if desired) connect the “C” terminal on the control
module to the positive wire that triggers the A/C compressor using the thin (18 AWG) green wire. Using a voltmeter, determine which wire coming from the compressor is the 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.
Rev. 03-09-12 #98330 Page 2 of 4
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