INSTALLATION INSTRUCTIONS
HIGH OUTPUT 2 SPEED RAD FAN ASSEMBLY
PART # 16816,16818,16819,16821,16822,16823 & 16828
Please read these instructions completely before beginning installation
KIT CONTENTS
QTY. DESCRIPTION
1 Fan Shroud Assembly
4 Angle Brackets
1 Rubber Fan Shroud Seal
IMPORTANT
This fan assembly is designed for PULLER APPLICATIONS
ONLY Engine side of radiator. (See Diagram #1)
MOUNTING OPTIONS
QTY. DESCRIPTION
16 1/4-20 x 3/4” Hex Bolts
16 1/4-20 Lock Nuts
40 1/4” Flat Washers
TOOLS NEEDED
7/16” Open End Wrench
7/16” Socket and Ratchet
Wire Stripper
Wire Crimping Tool
Diagram #1
Puller Fan
Engine
Radiator
Air Flow
Diagram #2
Angle
Brackets
Diagram #3
Option 1
Flush Mount
Down Flow Radiator
Option 2
Recessed Mount
Cross Flow Radiator
Angle Brackets
Adjustment Range
Angle
Bracket
Rubber Seal
(Page 1)
Derale Performance, Los Angeles, CA 800.421.6288 www.derale.com
3 3/4”
Adjustment
Range
Angle
Bracket
Rubber Seal
16816-16818-16819-16821-16822-16823-16828-InstructionSheet Revised-12/14/2011
INSTALLATION
1. Using a table or workbench, lay the Electric Fan Assembly on a flat surface, Electric Fan facing down.
2. Take the supplied Rubber Fan Shroud Seal and install it onto the bottom edge of the Fan Shroud Assembly.
(See Diagram #4)
3. Cut off any excess Rubber.
4. Identify the four Angel Brackets, 1/4-20 x 3/4” Hex Bolts, 1/4” Flat Washers & 1/4-20 Lock Nuts.
5. Attach the Angle Brackets to the Shroud using two bolts per bracket. (See Diagram #5)
In some applications where the radiator flange is not right up against the fan shroud, longer bolts can be used toNote:
space the Angle Brackets. (See Diagram #6) Hardware not included!
6. Position the Electric Fan Assembly against the radiator in the desired location.
7. Using the remaining 1/4-20 x 3/4” Hex Bolts, 1/4” Flat Washers & 1/4-20 Lock Nuts, attach the Electric Fan Shroud
Assembly to the radiator. (See Diagram #5)
In some cases the radiator flange may have to be drilled for proper alignment.Note:
Diagram #4
Fan Shroud
Assembly
Rubber Fan
Shroud Seal
Diagram #5
1/4” Bolt
Slotted
Holes
1/4” Flat Washer
Fan Shroud
Radiator
Flange
1/4” flat
Washers
1/4-20 x 3/4”
Hex Bolts
1/4” Flat Washer
1/4” Nyloc Nut
Diagram #6
OPTIONAL
MOUNTING
Angle
Bracket
Provided
Rubber Fan
Shroud Seal
Fan Shroud
WIRING
Important: The Electric Fan Assembly is built using a High Output two speed motor. If you choose to operate the fan using both
speeds, two switching devices or a Derale Dual Fan Controller Part # 16788 / 16789 must be used.
Reference Diagrams #7 & 8 on page 3
WIRE COLOR DESIGNATIONS
Black Wire - Ground (-)
Grey Wire - Low Speed 12V positive (+)
Brown Wire - High Speed 12V positive (+)
STANDARD WIRING
Using High Speed Only - Connect both Grey and Brown wires together to the same 12V positive (+) source
Using Both Low and High Speeds - Connect Grey wire to Switch #1, 12V positive (+) source.
- Connect Brown wire to Switch #2, 12V positive (+) source.
Important: Low speed must be activated prior to high speed activation
(Page 2)
Derale Performance, Los Angeles, CA 800.421.6288 www.derale.com
WIRING OPTIONS
There are a few options on how to activate (turn on) your new Electric Fan Assembly.
1. Manual Switch with Relay - Install a switch in the passenger compartment and turn on Electric Fan as desired.
2. Electric Fan Thermostat Switch
A. Adjustable Thermostat - Allows an adjustment range for you to determine optimal turn on temperature.
B. Pre Determined Temperature - Thermostat has a pre determined temp. from the factory that determines turn on temp.
We recommend using two thermostats therefore activating the low speed at an earlier temperature then the high speed.
Please visit www.derale.com for available thermostat options or visit your local retailer.
Note: When purchasing a thermostat always consider the maximum amp draw. Some thermostats are not designed to properly
handle higher amperage fans. When installing the Electric Fan with a Thermostat always follow manufacturer's instructions for
specific details.
WIRING DIAGRAM WITH RELAY (RELAY NOT SUPPLIED)
Diagram #7
12 Volt Positive (+)
Battery
30 86
RELAY
87
30Amp Fuse
Fan
Fan
Positive (+)
Positive (+)
Brown
Grey
High Speed Only
Chassis
Ground (-)
85
12V Switched Power
or Thermostat
FAN
MOTOR
Black
Chassis
Ground (-)
Diagram #8
12 Volt Positive (+)
Battery
30 86
RELAY
87
30Amp Fuse
Fan
Positive (+)
Brown
12V Switched Power
or Thermostat
Low & High Speeds
Black
Chassis
Ground (-)
85
12V Switched Power
or Thermostat
FAN
MOTOR
Grey
Black
Chassis
Ground (-)
(Page 3)
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.
Derale Performance, Los Angeles, CA 800.421.6288 www.derale.com
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