MSD 7530T Programmable Digital-7 Ignition Control Installation User Manual
Accessories (Not Supplied):
Hand Held Monitor, PN 7550
Inductive Cam Sync Pickup Kit, PN 7555
Non-Magnetic Cam Sync Pickup Kit,
Manual Launch RPM Control, PN 7551
WARNING: During installation, disconnect the battery cables. When disconnecting, always remove
the Negative cable first and install it last.
1 - 9-Pin Computer Harness
1 - Shielded Mag Pickup Harness, PN 8862
1 - 12-Pin Harness
1 - Coil Harness
1 - Power Lead Harness
The MSD Programmable Digital-7 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 controller
can make extremely quick compensations to the output voltage, multiple spark series, timing and rpm limits while
maintaining accurate timing signals to better than 0.1° total accuracy and +/- 2 rpm. The circuits and controller
of the ignition have been thoroughly debounced and suppressed to create protection against Electro Magnetic
The MSD features a capacitive discharge ignition design. The majority of stock ignition systems are inductive ignitions.
In an inductive ignition, the coil must store energy and step up the supplied voltage to maximum strength between
each firing. At higher rpm, since there is less time to charge the coil to full capacity, the secondary voltage falls short
of reaching its maximum energy level which results in a loss of power or top end miss.
The MSD Ignition features a capacitor which is quickly charged to 520 - 535 volts and stores its energy until the
ignition is triggered. With the CD design, the energy sent to the coil is always at maximum power even at high rpm.
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 21° of crankshaft rotation. Above 3,300 rpm
there is simply not enough “time” to fire the spark plug more than once, so there is only one powerful spark.
LED Shift Light, PN 7552
Manual Launch Control w/Shift Light,
Single Pole/Single Throw Relay, PN 8961
Double Pole/Double Throw Relay,
1 - Ignition Control, PN 7530T
1 - MSD Pro-Data+ CD
4 - Vibration Mounts & Screws
1 - Shielded Cam Sync Harness
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