Technical information

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN, EL PASO, TEXAS 79936 • [phone] • FAX [phone]
www.msdignition.com email: [e-mail]
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MSD MARINE IGNITION SYSTEM
MSD offers several ignition components designed for marine applications; the MSD 6M-2 Ignition Control PN
6460, 7ML-2 Ignition Control PN 7250, Marine Rev Limiter PN 8768, Universal Marine Engine Protector PN 5468
and several Pro-Billet Distributors. The Distributors are for use with boats equipped with automotive style engines.
All of the Marine Ignition components are equipped with Weathertight connectors and the corresponding connec-
tors.
The 6M-2 is a capacitive discharge, multiple spark ignition and will install to points, electronic ignitions and
magnetic pickups. The 6M-2 is U.L. approved for Marine use. The MSD 7ML-2 Ignition is not U.L. approved and
wires the same as the 7AL-2.
NOTE: The 6M-2 and 7ML-2 cannot be used with distributorless ignition models.
Specifications: 6M-2 7ML-2
Wire Functions
Power Cables: The heavy Red connects to the battery positive (+) terminal.
The heavy Black connects to the battery negative (-) terminal or other good
engine ground.
Red: Connects to a switched 12 volt source.
Orange: Connects to the positive (+) terminal of the coil. This is the only wire that
makes electrical contact with the coil positive terminal.
Black: Connects to the negative (-) terminal of the coil. This is the only wire that
makes electrical contact with the coil negative terminal.
White: This is one of the wires that provides a trigger signal for the MSD. It connects to
the breaker points or electronic ignition output. When this wire is used the
Magnetic pickup connector is not (Violet and Green).
Violet and Green: These wires are routed in the same 2-pin connector. they plug directly into the
2-pin connector of the MSD Marine Distributors. The Violet wire is positive (+)
and the Green wire is negative (-). When they are used, the White wire is not.
Accessory Wires (6M-2 Only)
Gray: This is the tach signal wire and connects directly to the tachometer. It produces
a 12 volt square wave signal.
Four Pin Connector: This connector plugs directly into the MSD Marine Rev Limiter, PN 8768.
WARNING: When using a capacitive discharge ignition control, there is high voltage
present at the coil primary terminals. Do not touch the coil or connect test
equipment to these terminals.
12 - 18 Volts
1 Amp per 1,000 rpm
14,000 w/ 14.4 Volts
20° (crankshaft rotation)
470 Volts
115 millijoules
4.75lbs, 8”x 3.75”x5.75”
11 - 18 volts
1 Amp per 1,000 rpm
15,000 rpm with 14.4 volt supply
20° (crankshaft rotation)
460 - 480 volts
105 - 115 milliJoules
6M-2: 2.75lbs., 8"L x 3.5"W x 2.25"H
Operating Voltage:
Current Requirements:
RPM Range:
Spark Duration:
Primary Voltage Output:
Spark Energy Output:
Weight and Size: