Parts Included:

1 - Ignition Control, PN 7531

1 - MSD Pro-Data+ CD Rom

4 - Vibration Mounts & Screws

1 - Shielded Cam Sync Harness

1 - 9-Pin Computer Harness

Accessories

Hand Held Monitor, PN 7550

Inductive Cam Sync Pickup Kit, PN 7555

Non-Magnetic Cam Sync Pickup Kit,

PN 2346

Manual Launch RPM Control, PN 7551

Digital Shift Light, PN 7542

MAP Sensor, see page 9

Replacement Harness, PN 8855

Single Pole/Single Throw Relay, PN 8961

Double Pole/Double Throw Relay, PN 8960

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

the Negative cable first and install it last.

Note: Solid core spark plug wires cannot be used with an MSD Ignition Control.

Important: When installing a Digital Series Ignition, timing will be affected, reset to your engine’s

specifications.

OPERATION

DIGITAL OPERATION

The MSD Programmable Digital-7 Plus uses a high speed RISC microcontroller to control the ignition’s output

while constantly analyzing the various inputs such as supply voltage, trigger signals and rpm. The high speed

controller can make extremely quick compensations to the output voltage, multiple spark series, timing and rpm

limits while maintaining accurate timing signals to within +/- 0.1° and +/- 10 rpm. The circuits and controller of

the ignition have been thoroughly debounced and suppressed to create protection against Electro Magnetic

Interference (EMI).

CAPACITIVE DISCHARGE

The MSD features a capacitive discharge ignition design. The majority of stock ignition systems are inductive ignitions.

In an inductive ignition, the coil must store energy and step up the supplied voltage to maximum strength between

each firing. At higher rpm, since there is less time to charge the coil to full capacity, the secondary voltage falls short

of reaching its maximum energy level which results in a loss of power or top end miss.

The MSD Ignition features a capacitor which is quickly charged to 520 - 535 volts and stores its energy until the

ignition is triggered. With the CD design, the energy sent to the coil is always at maximum power even at high rpm.

1 - Mag Pickup Harness, PN 8860

1 - 12-Pin Harness

1 - Coil Harness

1 - Power Lead Harness

Programmable Digital-7 Plus

PN 7531

ONLINE PRODUCT REGISTRATION: Register your MSD product online. Registering your product

will help if there is ever a warranty issue with your product and helps the MSD R&D team create

new products that you ask for! Go to www.msdperformance.com/registration.