Parts Included:

1 - MSD Ignition

1 - Screwdriver

4 - Vibration Mounts

1 - Harness, PN 8860

1 - Parts Bag, ASY 28928

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

remove the Negative cable first and install it last.

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

Note: Do not use digital or dial back timing lights.

LED INDICATOR

There is an LED that monitors the status of the Ignition. The LED monitors the trigger signals and will

flash to warn if the supply voltage drops below 9 volts while under 3,000 rpm.

OPERATION AND FEATURES

DIGITAL OPERATION

The MSD 6AL-2 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 con-

troller can make extremely quick compensations to the output voltage, multiple spark series, timing

and rpm limits while maintaining accurate timing signals to within 1° and 1% of the rpm limits. The

circuits and controller of the 6AL-2 have been thoroughly filtered to create protection against Electro

Magnetic Interference (EMI).

CAPACITIVE DISCHARGE

The MSD 6AL-2 features a capacitive discharge ignition design. The majority of stock ignition

systems are inductive ignitions. In an inductive ignition, the coil must store and step up the voltage

to maximum strength in between each firing. At higher rpm, since there is less time to charge the coil

to full capacity, the voltage falls short of reaching maximum energy which results in a loss of power

or top end miss.

The MSD Ignition features a capacitor which is quickly charged with 520 - 535 volts and stores it until

the ignition is triggered. With the CD design, the voltage sent to the coil is always at full power even

at high rpm.

MULTIPLE SPARKS

The MSD produces full power multiple sparks for each firing of a plug. The number of multiple sparks

that occur decreases as rpm increases, however the spark series always lasts for 20° of crankshaft

rotation. Above 3,000 rpm there is simply not enough “time” to fire the spark plug more than once,

so there is only one powerful spark.

PROTECTION

The MSD 6AL-2 has a built in reverse polarity protection circuit. This will protect the ignition in the

event of wrong connections. It will also shut off for protection from a surge in power. The ignition will

still operate once the surge or polarity is corrected.

MSD 6AL-2 Ignition Control

PN 6421

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.