MSD 7720 Power Grid System - Ignition Control Only Installation - Manual

Parts Included:
1 - MSD PowerGrid 7 Ignition Controller
1 - Wire Harness
1 - Parts Bag
WARNING: During installation, disconnect the battery cables. When disconnecting, always remove
the Negative cable first and install it last.
Note: Solid core spark plug wires cannot be used with an MSD Ignition Control.
MSD Power Grid 7 Ignition Control
PN 7720
The Power Grid 7 Ignition Control was specifically designed to pair with the Power Grid System
Controller, PN 7730. This Ignition system is designed for racing applications; it is not for sale for legal
use on highways.
SPECIFICATIONS
Spark Energy: 200 – 220 milliJoules/spark
Primary Voltage: 545 – 570 volts
Secondary Voltage: 50,000 volts plus
Spark Series Duration: 20° Crankshaft Rotation
RPM Range: 15,000 rpm with 14.4 volts
Voltage Required: 12 – 18 volts, Negative Ground
Current Draw: 1.3 Amp per 1,000 rpm
Weight and Size: 2.9 LBS, 7.5”L x 5”W x 2.25” H
GENERAL INFORMATION
BATTERY
An MSD Power Grid 7 Ignition Control will operate on any negative ground, 12 volt electrical system
with a distributor. The MSD can be used with 18 volt batteries and can withstand a momentary 24
volts in case of jump starts. The Ignitions will deliver full voltage with a supply of 10 - 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, the amp/hour rating should be higher.
COILS
It is recommended to use either the Pro Power HVC, PN 8251, or Pro Power HVC II, PN 8261. If you
have any questions concerning coils, contact our Customer Service Department at (915) 855-7123.
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in our monthly 8.5mm Super Conductor Spark Plug Wire give-away! Registering your product
will help if there is ever a warranty issue with your product and helps the MSD R&D team create
new products that you ask for! Go to www.msdperformance.com/registration.