MSD 8728 Installation

Page 1

Soft Touch Rev Control

PN 8728

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Note: This Soft Touch Rev Control, PN 8728, is designed for inductive style ignition systems only. It

cannot be used with an MSD Ignition Control!

Parts In c l u d e d :

1 - Soft Touch Rev Control 4 - Mounting Pads and Sleeves 4 - RPM Modules, 3,000, 6,000, 7,000, 8,000

WARNING: During installation, disconnect the battery cables. When disconnecting the battery,

always remove he Negative cable ﬁrst and install it last.

Note: The RPM limit is set with plug-in rpm modules. If an rpm module is not installed, there will be no rpm limit.

CYLINDER SELECT

4 - Wire Splicers 4 - Self Tapping Screws 4 - Wire Insulating Caps

The Soft Touch Rev Control comes from MSD programmed for 8-cylinder applications. It can easily be adjusted for operation on other engines by cutting the cylinder select wire loops (Figure 1). If the loops are cut, use the supplied insulating caps to seal the wire ends.

MOUNTING

The Rev Control can be mounted in the engine compartment but away from direct heat sources. It is recommended to mount it where the rpm module is easy to access for rpm adjustments. Make sure all of the wiring reaches their connections. Once a suitable mounting location is determined mark the location of the mounting holes by using the unit as a template. Remove the unit and use an 1/8” bit to drill the holes. Install the supplied mounts and use the four self tapping screws to secure the Control (Figure 2).

Figure 1 Selecting the Number of Cylinders.

Figure 2 Installing the Vibration Mounts.

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2 INSTALLATION INSTRUCTIONS

WIRING

WARNING: High voltage is present on the coil terminals. Do Not touch the coil terminals or

tower when the engine is cranking or running.

Red Connects to a switched 12 volt source.

Black Connects to ground on the engine.

Green Connects to the coil negative (-) terminal.

Trigger Pickup Wires

White If the distributor is triggered by breaker points or an ampliﬁer, this wire needs to be

spliced to its trigger wire. Violet If the distributor uses a magnetic pickup, this wire needs to be spliced into the positive

mag pickup wire.

Figure 3 Wiring to a Points/Ampliﬁer Ignition.

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INSTALLATION INSTRUCTIONS 3

Note: The GM Unitized Coil, HEI Distributor was produced

with several different modules. If this installation seems to cause a rough limit, try the wiring shown in Figure 5 below.

Figure 4 Wiring to a GM HEI Distributor, using the Module.

Figure 5 Wiring to a GM HEI Distributor using the Magnetic Pickup.

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4 INSTALLATION INSTRUCTIONS

Figure 6 Wiring to a GM Dual Connector Coil System.

Figure 7 Wiring to a Ford Duraspark Ignition.

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INSTALLATION INSTRUCTIONS 5

Figure 8 Wiring to a Ford TFI Ignition.

Figure 9 Wiring to a Chrysler Magnetic Pickup.

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6 INSTALLATION INSTRUCTIONS

Figure 10 Wiring to a Late Model Dodge Ignition.

RPM MODULE KITS

EVEN

INCREMENTS

3,000-3,800 4,000-4,800 5,000-5,800 6,000-6,800 7,000-7,800 8,000-8,800

9,000-9,800 10,000-10,800 11,000-11,800 12,000-12,800 13,000-13,800

Kits are supplied with ﬁve modules in 200 rpm increments.

PN 8743 PN 8744 PN 8745 PN 8746 PN 8747 PN 8748 PN 8749 PN 8750 PN 8751 PN 8752 PN 8753

3,100-3,900 4,100-4,900 5,100-5,900 6,100-6,900 7,100-7,900 8,100-8,900

9,100-9,900 10,100-10,900 11,100-11,900 12,100-12,900 13,100-13,900

ODD

INCREMENTS

PN 87431 PN 87441 PN 87451 PN 87461 PN 87471 PN 87481 PN 87491 PN 87501 PN 87511 PN 87521 PN 87531

RPM MODULE

SELECTORS

3,000-5,200 4,600-6,800 6,000-8,200 7,600-9,800

9,000-11,200

10,600-12,800

RPM Selectors feature a dial that

allows you to choose between 12

different rpm limits in 200 rpm

PN 8670 PN 8671 PN 8672 PN 8673 PN 8674 PN 8675

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INSTALLATION INSTRUCTIONS 7

Tech Notes

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Tech Notes

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Service

In case of malfunction, this MSD component will be repaired free of charge according to the terms of the warranty.

When returning MSD components for warranty service, Proof of Purchase must be supplied for veriﬁcation. After

When returning MSD components for warranty service, Proof of Purchase must be supplied for veriﬁcation. After the warranty period has expired, repair service is based on a minimum and maximum fee.

the warranty period has expired, repair service is based on a minimum and maximum fee.

All returns must have a Return Material Authorization (RMA) number issued to them before

being returned. To obtain an RMA number please contact MSD Customer Service at 1 (888) MSD-7859 or

being returned. To obtain an RMA number please contact MSD Customer Service at 1 (888) MSD-7859 or visit visit our website at www.msdignition.com/rma to automatically obtain a number and shipping information.

our website at www.msdperformance.com/rma to automatically obtain a number and shipping information.

When returning the unit for repair, leave all wires at the length in which you have them installed. Be sure to include

a detailed account of any problems experienced, and what components and accessories are installed on the vehicle.

a detailed account of any problems experienced, and what components and accessories are installed on the vehicle. The repaired unit will be returned as soon as possible using Ground shipping methods (ground shipping is covered

The repaired unit will be returned as soon as possible using Ground shipping methods (ground shipping is covered by warranty). For more information, call MSD at (915) 855-7123. MSD technicians are available from 7:00 a.m. to

by warranty). For more information, call MSD at (915) 855-7123. MSD technicians are available from 7:00 a.m. to 5:00 p.m. Monday - Friday (mountain time).

5:00 p.m. Monday - Friday (mountain time).

Limited Warranty

SD warrants this product to be free from defects in material and workmanship under its intended normal use*,

when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date of

when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date of the original purchase. This warranty is void for any products purchased through auction websites. If found to be

the original purchase. This warranty is void for any products purchased through auction websites. If found to be defective as mentioned above, it will be repaired or replaced at the option of MSD. Any item that is covered under

defective as mentioned above, it will be repaired or replaced at the option of MSD. Any item that is covered under this warranty will be returned free of charge using Ground shipping methods.

this warranty will be returned free of charge using Ground shipping methods. This shall constitute the sole remedy of the purchaser and the sole liability of MSD. To the extent permitted by

This shall constitute the sole remedy of the purchaser and the sole liability of MSD. To the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representation whether expressed or implied,

law, the foregoing is exclusive and in lieu of all other warranties or representation whether expressed or implied, including any implied warranty of merchantability or ﬁtness. In no event shall MSD or its suppliers be liable for special

including any implied warranty of merchantability or ﬁtness. In no event shall MSD or its suppliers be liable for special or consequential damages.

or consequential damages. *Intended normal use means that this item is being used as was originally intended and for the original application

*Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD. Any modiﬁcations to this item or if it is used on an application other than what MSD markets the

as sold by MSD. Any modiﬁcations to this item or if it is used on an application other than what MSD markets the product, the warranty will be void. It is the sole responsibility of the customer to determine that this item will work for

product, the warranty will be void. It is the sole responsibility of the customer to determine that this item will work for the application they are intending. MSD will accept no liability for custom applications.

the application they are intending. MSD will accept no liability for custom applications.

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FRM28768 Revised 12/11 Printed in U.S.A.