Msd 7720 Power Grid System - Ignition Control Only Ins- User Manual
Msd 7720 Power Grid System - Ignition Control Only Ins– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – SPARK PLUGS AND WIRES; Note: A larger plug gap taxes the cap, rotor and spark plug; MISCELLANEOUS INFORMATION
- Page 3 – MOUNTING; GENERAL WIRING INFORMATION; Wire Length: All of the wires of the MSD Ignition may; ROUTING WIRES; Figure 3 Mounting
- Page 4 – WIRING; Deutsch Male 4-Pin Connector; Figure 1 General Wiring
- Page 5 – PRESTART CHECKLIST; both heads to the block and then to the chassis are ideal.; TROUBLESHOOTING; to improper installation or poor connections.; MISSES AND INTERMITTENT PROBLEMS; 0 volts during a race, the MSD output voltage will drop.
- Page 6 – CHECKING FOR SPARK; If triggering the ignition with the White wire:
- Page 7 – TECH NOTES
- Page 8 – Limited Warranty; Service; Proof of Purchase must be supplied for verification. After; issued to them before; M S D
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.
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
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.msdperformance.com/registration.
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Summary
2 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 SPARK PLUGS AND WIRES Spark plug wires are very important to the operation of your ignition system. A good quality, helically wound wire and...
INSTALLATION INSTRUCTIONS 3 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 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 mo...
4 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 WIRING Deutsch Male 4-Pin Connector 12ga Red Battery Positive – This wire connects directly to the battery positive (+) terminal or to a pos...
