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MSD Power Grid 7 Ignition Control
ONLINE PRODUCT REGISTRATION: Register your MSD product online and you'll be entered
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.msdignition.com/registration.
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.
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.
M S D
I G N I T I O N
PN 7720
• W W W . M S D I G N I T I O N . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • FA X ( 9 1 5 ) 8 5 7 - 3 3 4 4
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Related Manuals for MSD 7720
Summary of Contents for MSD 7720
- Page 1 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.
- Page 2 #5 wire is induced into #7 detonation could occur and cause engine damage. To add more heat protection to your plug wires, MSD offers Pro-Heat Guard, PN 3411. This is a glass woven and silicone coated protective sleeve that you slide over your plug wires. For extra protection of the spark plug boots, MSD offers Pro-Heat Boot Guard, PN 3412.
- Page 3 INSTALLATION INSTRUCTIONS MOUNTING The Power Grid 7 can be mounted in most any spot that would be acceptable for other MSD boxes. However, if the Ignition is to be mounted with the System Controller paired in the top mounting position particular attention should be paid to the heat around the units. In this stacked position it is recommended that the units be mounted inside the vehicle cabin.
- Page 4 INSTALLATION INSTRUCTIONS WIRING Deutsch Male 4-Pin Connector 12ga Red Battery Positive – This wire connects directly to the battery positive (+) terminal or to a positive battery junction or the positive side of the starter solenoid. 12ga Black Battery Negative – This wire connects to a good ground, either at the battery negative (-) terminal or to the engine.
- Page 5 • The Power Grid 7, PN 7720, MUST be properly connected to the System Controller, PN 7730. Consult the PN 7730 Quick Start Guide to ensure starting parameters. • The only wires connected to the coil terminals are the MSD Orange to coil positive (+) and MSD Black to coil negative (-).
- Page 6 If there was no spark with the full system connected, but there is spark when the Power Grid 7, PN 7720, is tested by itself, there is likely an issue with either the wiring connections or the System Controller, PN 7730.
- Page 7 INSTALLATION INSTRUCTIONS TECH NOTES _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ M S D I G N I T I O N...
- Page 8 *Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD Ignition. Any modifications to this item or if it is used on an application other than what MSD Ignition markets the product, the warranty will be void.
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