6425 Datasheet, PDF (6/20 Pages) Alpha Wire – CUSTOMER PRODUCT SPECIFICATION

6
INSTALLATION INSTRUCTIONS
Playback Tach: If you use a playback tach, be sure to check the high rpm value prior to turning the
key to the On position. When the key is in the On position, the rev limit will be displayed and may
override the tach memory.
PRESTART CHECK LIST
• The only wires connected to the coil terminals are the MSD Orange to coil positive and Black to
coil negative.
• The small Red wire of the MSD is connected to a switched 12 volt source.
• The MSD power leads are connected directly to the battery positive and negative terminals.
• The battery is connected and fully charged if not using an alternator.
• The engine is equipped with at least one ground strap to the chassis.
• If you are installing on a 4 or 6-cylinder engine, confirm the programming loops have been modified,
see page 5.
TROUBLESHOOTING
Every MSD Ignition undergoes numerous quality control checks including a four hour burn-in test. If
you experience a problem with your MSD, our research has shown that the majority of problems are
due to improper installation or poor connections.
The Troubleshooting section has several checks and tests you can perform to ensure proper installation
and operation of the MSD. If you have any questions concerning your MSD, call our Customer Support
Department at [phone], 7 - 5 mountain time.
M S D  •  WWW.MSDPERFORMANCE.COM • [phone] • FAX [phone]