MSD 6201 Digital 6A Ignition Control - Manual (Page 6)

6 INSTALLATION INSTRUCTIONS
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
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.
CONNECTING THE DIGITAL 6AL WITH THE MSD POWER GRID SYSTEM
CONTROLLER, PN 7730
A wiring diagram to connect the MSD Power Grid System Controller to a 6AL can be found in the
instructions for the System Controller, PN 7730. A special rev limit must be selected when connecting
to the Power Grid. This setting is (1 / 1), meaning to put both dials on 1. With the Digital 6AL's Rev
Limit Rotary Dials both set to one, the box programming will change to accept the Power Grid.
Note: Under no other conditions should the rotary dials be set to (1 / 1); this could cause severe
issued with how the box reads the input signal. Similarly, using the System Controller
when the 6AL is not set to 1 / 1 will cause issues that could result in engine damage.
Note: The 6A, PN 6201, is not compatible with the Power Grid Controller.
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.
THEFT DETERRENT
The MSD provides the opportunity to easily install a theft deterrent kill switch (Figure 3).
White Wire Trigger
When using the WHITE wire to trigger the MSD, install a switch across the magnetic pickup VIOLET
wire to ground. When the VIOLET wire is grounded, the vehicle will crank but not start.
Magnetic Pickup Trigger
When using the mag pickup to trigger the MSD, install a switch to the WHITE wire and the other side
to ground. When the WHITE wire is grounded, the vehicle will crank but will not start.
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 (915) 855-7123, 7 - 5 mountain time.
Figure 3 Connecting a Theft Deterrent Switch Through the MSD Ignition.