Edelbrock 72230 Users Manual Adjustable Control Module For Harley Davidson Nitrous System

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2004 Edelbrock Corporation

Brochure #63-0131 Catalog #72230

Rev. 5/04

Please study these instructions carefully before installing your new Edelbrock Nitrous System. Failure to

follow instructions will void warranty and may cause damage to parts and/or personal injury. If you have any questions

or problems, please call our Technical Hotline at: 1-800-416-8628, 7:00 am - 5:00 pm, Pacific Standard Time, Monday

through Friday or e-mail us at edelbrock@edelbrock.com.

NOTE: Before starting this project, be sure that the motorcycle is cool enough to work on and that the battery is

disconnected (negative cable first). Failure to disconnect the battery could result in electrical damage to the adjustable

control module and/or personal injury. PRE-INSTALLATION

1. Make sure that the Nitrous Module Housing is easily accessible. Remove any components from the motorcycle

that could be blocking access to the unit.

2. Remove the Chrome Cover Plate from the Nitrous Module Housing unit by removing the four allen head bolts from

the top of the cover plate (Fig. 1). Be sure to disconnect the wires routing to your arming switch, mounted on the

Chrome Cover Plate, to prevent damage when the cover is removed completely (Fig. 2). This will allow you access

to the Control Module for the proper removal and installation of your new component.

ADJUSTABLE CONTROL MODULE

for Edelbrock Harley-Davidson Nitrous Systems

Kit #72230

INSTALLATION INSTRUCTIONS

3Remove the wire clamp located on the inside of the backing plate (Fig. 3).

4. Disconnect all of the Nitrous Control Module wires from their destinations.

This entails disconnecting all of the following connections:

• Battery (red wire)

• Module ground (black wire)

• Tachometer lead (green wire)

• Single Fire or Dual Fire Mode Wire (gray wire)

• Arming switch (orange wire)

• Fuel pump power (blue wire)

• Fuel pump ground (black wire)

• Solenoid connectors (black plastic clips)

5. After all connections have been removed, remove the Nitrous Control Module

from the backing plate. This can be done by using a flat head screwdriver

to pry the module off the plate (Fig. 4). The module is held on by double

sided tape. Scrape off any remaining tape from the backing plate to ensure

that your new Adjustable Control Module mounts securely.

Fig 1 Fig 2

Fig 3

Fig 4

Page 2of 4

2004 Edelbrock Corporation

Brochure #63-0131 Catalog #72230

Rev. 5/04

INSTALLATION

1. Install your new Adjustable Control Module onto the

backing plate in the same location as the Control Module

that you just removed. Install the module so that the

adjustment controls are located on the bottom of the

module (Fig. 5).

2. Connect the black ground wire off of the adjustable

module, labeled “GND” to the backing plate using the bolt

that you previously removed (Fig. 5).

3. If using a Single Fire Ignition, leave the gray wire labeled

“SF/DF” loose and tape or cut and apply a butt connector

to the end of the wire so that it cannot contact anything. If

using a Dual Fire Ignition, connect the gray wire labeled

“SF/DF” to the same bolt as the black ground wire off the

adjustable module (Fig. 5).

4. Route the blue and black fuel pump wires, labeled “PUMP”, through

the wire port on the backing plate. Connect the blue fuel pump wire

to the positive (+) terminal of the nitrous system fuel pump and the

black fuel pump wire to the negative (-) terminal of the nitrous

system fuel pump (Fig. 6).

5. Connect the two black male solenoid clip terminals to their

corresponding female clip terminals routed through the wire port of

the backing plate (Fig. 5). Be sure that you connect the “FUEL”

terminal to the fuel solenoid wire terminal and the “NOS” terminal to

the nitrous solenoid wire terminal.

6. Route the red and green wires through the wire port of the backing plate. Connect the green wire, labeled “TACH”,

to the tach lead. Leave the red wire disconnected at this time.

7. Using the wire clamp that you previously removed

during the Nitrous Control Module removal, route all of

the excess wire that is now in the housing through the

loop and mount this clamp in its original location, such

as depicted in Fig. 3.

7. Connect the orange wire, labeled “ARM”, to the top

terminal of the Arming Switch. Connect the remaining

wires that you previously disconnected from the

arming switch to their appropriate terminals on the

switch.

8. Install the Chrome Cover Plate using the four bolts and

washers that you removed previously.

9. Connect the red wire, labeled “13.8V”, to the battery or

key activated circuit breaker.

10. Your Adjustable Control Module has been supplied with an adjustment settings sticker for your convenience. This

sticker can be mounted wherever you feel is convenient, but we recommend placing the sticker on the inside of

the Chrome Cover Plate as depicted in Fig. 7. This will keep the sticker from being misplaced, as well as be

located in a convenient location for reference when you are adjusting your settings.

Fig 5

Fig 6

Fig 7

Page 3of 4

2004 Edelbrock Corporation

Brochure #63-0131 Catalog #72230

Rev. 5/04

WIRING DIAGRAM

Wire System Origin Destination

Color

Red Battery Voltage Nitrous Module Harness Battery or Key activated circuit breaker

Black Module Ground Nitrous Module Harness Ground to cylinder head bolt

Green Tach Trigger wire Nitrous Module Harness Factory Tachometer lead or Coil

Orange System Arming Wire Nitrous Module Harness Top Terminal of Arming Switch

Yellow Horn interface wire Horn power lead. From Center Terminal of Arming Switch

Harness 12+ factory

Harness lead.

Blue Horn interface wire Horn power lead. From Bottom Terminal of Arming Switch

Horn 12+ Side of Horn

Gray Single or dual fire Nitrous Module Harness SF* Leave wire end loose and tape or

SF/DF Ignition lead cut and apply a butt connector.

DF* Ground wire to Module plate

Page 4of 4

2004 Edelbrock Corporation

Brochure #63-0131 Catalog #72230

Rev. 5/04

ADJUSTING THE CONTROL MODULE

The settings diagram located below is the same as the sticker that you previously installed. This diagram contains crucial

information that will allow you to select the setting that you would like your nitrous system to activate at as well as shut

down at. Depending on your engines configuration and power, the nitrous system can be programmed to activate at

between 2000 RPM and 5000 RPM and shut down between 5250 RPM and 7125 RPM. You should consult with the engine

builder and/or manufacturer to find out the rev limit for your specific engine. NEVER exceed the RPM limit of your

engine. Severe engine damage may occur!

Adjusting your control module is done very easily using a small flathead screwdriver. First, select the RPM that you would

like the nitrous system to activate at using the chart below (or the sticker supplied with the kit). Set the arrow on the left

pot to the correct number or letter for the setting you would like. Last, select the RPM

that you would like the nitrous system to de-activate and set the right pot to the correct

number or letter for the setting you would like. Below are two examples of different

settings. Once these setting have been made, your system is ready to run!

Examples:

Edelbrock General Warranty

It is the constant endeavor of Edelbrock Corporation to give our customers the highest quality products obtainable. Edelbrock

warrants each new product, except Performer Series Carburetors, Race Division Parts, Tubular Exhaust Systems, RPM Series

Mufflers, Cat-Back Systems and Performer IAS Shock Absorbers which are warranted separately, to be free from defects in both

workmanship and material for a period of one (1) year from the date of purchase, provided that the product is properly installed,

subjected to normal use and service and that the product is not modified or changed in any way, negligence by customer or

installer or used for racing or competition purposes.

Our warranty service and repair facility is located at 2700 California Street, Torrance, California 90503. Customers who believe

they have a defective product should either return it to the dealer from which it was purchased or ship it directly to Edelbrock

along with proof of purchase and a complete description of the problem. The product must be returned freight pre-paid. If a

thorough inspection of the product by the factory indicates defects in workmanship or material, our sole obligation shall be to

repair or replace the product. Warranty covers only the product itself and not the cost of installation or removal.

Edelbrock Corporation shall not be liable for any and all consequential damages occasioned by the breach of

any written or implied warranty pertaining to this sale in excess of the purchase price of the product sold.

If you have any questions regarding a product or installation,

please contact our Technical Department, toll free at 1-800-416-8628

from 7:00 am to 5:00 pm PST,

Monday through Friday.

Shown above:

The left pot is at setting 7

7=3400RPM activation

The right pot is at setting A

A=6500RPM de-activation

Shown above:

The left pot is at setting 2

2=2400RPM activation

The right pot is at setting 8

8=6250RPM de-activation