This stuff is easy to research. Googled MSD directions and came up with this. Complete instructions with pictures are here also.
"MSD IGNITION
• www.msdignition.com • (915) 857-5200 • FAX (915) 857-3344
MSD 6 Series
6A, 6AL, 6T, 6BTM, 6TN, 6ALN
Parts Included:
1 - MSD 6 Series Ignition 1 - 100V/1A Diode
1 - Harness, PN 8860 4 - Wire Splicers
1 - Harness, PN 8861 2 - Wire Ties
1 - 18" Ground Wire 1 - Faston Receptacle
1 - White Jumper 2 - Faston Straight Terminals
1 - Red Jumper
4 - 45° Faston Terminals 6T, 6TN, 6AL 6ALN, 6BTM, 6-Offroad Only:
4 - #8 x 3/4" Screws 4 - Vibration Mounts and Hardware 2 - 10-32 x 1/2" Screws
4 - 10-32 Hex Nuts 6AL, 6ALN, 6BTM Only:
6 - #10 Lock Washers 4 - RPM Modules, 3,000, 6,000, 7,000, 8,000
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: An MSD 6 Series cannot be used with distributorless ignition systems (DIS).
THEORY OF 6 series ignition
Capaciti apaciti ve Discharge
The MSD 6 Series Ignitions feature 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 (within one millisecond) with 460 - 480 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.
Multiplltipl e Spa Sparks
The MSD 6 Series 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.
Rev Limiter
6AL, 6ALN, 6BTM: These ignitions are equipped with built-in Adjustable Soft Touch Rev Controls. MSD Rev Limiters are adjustable with plug-in modules which are available in 100 rpm increments. The Soft Touch circuitry provides a smooth and accurate rev limit by dropping the spark to individual cylinders. The Soft Touch produces a load-free rev limit that is within 1% of the selected rpm.
INSTALLATION INSTRUCTIONS
MSD IGNITION •
www.msdignition.com • (915) 857-5200 • FAX (915) 857-3344
MSD 6T, 6TN
These Ignitions feature a special 4-wire connector which plugs directly into an external rev limiter; the MSD PN 8738 Rev Control or the Soft Touch Engine Control, PN 8968. The PN 8738 is a single rev limit only, while the PN 8968 features two rev limits and an RPM Activated Switch.
GENERAL INFORMATION
BATTER Y
An MSD 6 Series Ignition Control will operate on any negative ground, 12 volt electrical system with a distributor. The MSD can be used with 16 volt batteries and can withstand a momentary 24 volts in case of jump starts. The Ignitions will deliver full voltage with a supply of 9 - 18 volts and will operate with a supply voltage as low as five volts.
If your application does not use an alternator, allow at least 15 amp/hour for every half hour of operation. If the engine is cranked with the same battery or other accessories such as an electric fuel or water pump are used, the amp/hour rating should be higher.
COILS
The MSD 6 Series Ignitions can be used with most stock coils and aftermarket coils designed to replace the stock coils. There are some "race only" coils such as the MSD Pro Power Coil, PN 8201, that cannot be used with a 6 Series MSD Ignition Control. For more information on recommended coils, consult the supplied Coil Application Chart or check with the manufacturer of your coil. If you have any questions concerning coils, contact our Customer Service Department at (915) 855-7123.
