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MSD 6-HVC Professional Racing Ignition
ORANGE
BROWN
GREEN
VIOLET
RED
BLACK
(+) COIL
TACH
(-) MAG
(+) MAG
(+) 12V
(-) COIL
6
5
4
1
2
3
BLACK
RED
VIOLET
ORANGE
BROWN
GREEN
with Rev Limiter
PN 6631 and PN 6632
IMPORTANT: Read instuctions thoroughly before attempting installation.
Parts Included:
1 - Ignition Control
1 - 6-Pin Deutsch Wiring Harness
1 - 2-Pin Deutsch Wiring Harness (Disable Switch)
1 - 1-Pin Weathertight Wiring Harness
IMPORTANT: Due to the MSD 6-HVC Ignition's increased output, the MSD HVC Coil, PN 8250 and
Blaster HVC, PN 8252 are the only coils that can be used with the PN 6631 and PN 6632
Ignition.
MOUNTING
The Ignition can be mounted in any position and may be mounted in the engine compartment however,
it should be kept clear of direct engine heat sources. Use the Ignition as a template to mark the location
of the mounting holes. Using a 3/16" drill bit, remove the ignition and drill the holes. Install the vibration
mounts and the ignition.
WIRING
Figure 1 shows the position, color and function of each wire. The following Figures show common wiring
schematics.
Triggering: The MSD can be triggered by points, amplifier or with a magnetic pickup.
1 - 2-Pin Deutsch Power Harness
1 - Parts Bag (4-Vibration Mounts, 4 RPM
Modules)
1 - 2-Pin Deutsch Connector
Points: The single White wire of the MSD is for points triggering. It connects to the points/amplifier output wire of the distributor.
Magnetic Pickup: The Magnetic Pickup wires are in the 6-Pin connector. The Mag positive(+) wire is
Violet, the Mag Negative(-) is Green. They are in the terminals marked "3" and "4".
Ignition Disable: This 2-pin connector provides an easy installation of NASCAR's mandated auxiliary
ignition On/Off button, 20-6.6. When the Yellow and a Black wire are connected the ignition is turned Off.
M S D I G N I T I O N • w ww .m s di gn it io n. co m • ( 91 5 ) 8 5 7- 52 0 0 • F AX ( 91 5) 85 7- 3 34 4
Figure 1 Wire Functions of the 6-pin Connector.
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2 INSTALLATION INSTRUCTIONS
POINTS/
AMPLIFIER
DISTRIBUTOR
WHITE
IGNITION
DISABLE
NO SWITCH
OR SWITCH PN 8812
TO GROUND (-) HEAVY BLACK
TO BATTERY (+) HEAVY RED
ORANGE/BLACK(+)
(-) VIOLET/BLACK
GREEN (M-)
VIOLET (M+)
OR
MAGNETIC
PICKUP
DISTRIBUTOR
YELLOW
BLACK
BLACK
ORANGE
TACHOMETER
BROWN
RED
12V IGNITION SWITCH
+
PN 8250
GROUND
YELLOW
BLACK
Inset A
See
Inset A
RPM
MODUL
E
SPDT SWITCH
PN 8807
P/N
8
80
7
TO 12 VOLTS
WHITE
NOT USED
MAGNETIC
PICKUP
DISTRIBUTOR
BLACK
ORANGE
TACHOMETER
RED
PN 8250
GROUND
+
WHITE
NOT USED
BLACK
ORANGE
RED
PN 8250
GROUND
+
ORANGE/BLACK (+)
VIOLET/BLACK (-)
GREEN (M-)
VIOLET (M+)
* TO SWITCH TACH SIGNALS, MSD
OFFERS A TACH SPLITTER, PN 8911
HEAVY RED TO BATTERY (+)
HEAVY BLACK TO GROUND (-)
HEAVY RED TO BATTERY (+)
HEAVY BLACK TO GROUND (-)
IGNITION
DISABLE
NO SWITCH
OR
SWITCH
PN 8812
YELLOW
BLACK
TACH
SPLITTER
PN 8911
BROWN
Inset A
See
Inset A
See
Inset A
RP
M
MODUL
E
ORANGE/BLACK (+)
VIOLET/BLACK (-)
GREEN (M-)
VIOLET (M+)
Note: The MSD Alternate Action
Switch is designed to be used
in conjunction with NASCAR's
amendment rule regarding an
auxiliary ignition On/Off button,
20-6.6. The MSD Switch can
be used in either a Normally
Opened or Normally Closed
position.
Figure 2 General Installation.
Figure 3 Dual Ignitions and Coils with a Dual Pickup Distributor.
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INSTALLATION INSTRUCTIONS 3
MAGNETIC
PICKUP
DISTRIBUTOR
BLACK
ORANGE
RED
PN 8250
GROUND
+
PN 8250
GROUND
+
P/N
8
80
7
TO 12
VOLTS
WHITE
NOT USED
TACH
TACH
SPLITTER
PN 8911
RED
WHITE
NOT USED
BLACK
ORANGE
RED
IGNITION
DISABLE
NO SWITCH
OR
SWITCH
PN 8812
YELLOW
BLACK
BROWN
RP
M
MODUL
E
Inset A
See
Inset A
See
Inset A
ORANGE/BLACK (+)
VIOLET/BLACK (-)
GREEN (M-)
VIOLET (M+)
HEAVY RED TO BATTERY (+)
HEAVY BLACK TO GROUND (-)
HEAVY RED TO BATTERY (+)
HEAVY BLACK TO GROUND (-)
Figure 4 Dual Ignitions and Coils with a Single Pickup Distributor.
RPM Modules are available in kits of five in even and odd increments, Figure 5.
RPM MODULE KITS
EVEN INCREMENTS
3,000-3,800:
4,000-4,800:
5,000-5,800:
6,000-6,800:
7,000-7,800:
8,000-8,800:
9,000-9,800:
10,000-10,800:
11,000-11,800:
12,000-12,800:
PN 8743
PN 8744
PN 8745
PN 8746
PN 8747
PN 8748
PN 8749
PN 8750
PN 8751
PN 8752
Figure 5 RPM Module Kits.
10,100-10,900:
11,100-11,900:
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ODD INCREMENTS
3,100-3,900:
4,100-4,900:
5,100-5,900:
6,100-6,900:
7,100-7,900:
8,100-8,900:
9,100-9,900:
PN 87431
PN 87441
PN 87451
PN 87461
PN 87471
PN 87481
PN 87491
PN 87501
PN 87511
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NOTES
Service
In case of malfunction, this MSD component will be repaired free of charge according to the terms of the warranty.
When returning MSD components for warranty service, Proof of Purchase must be supplied for verification. After
the warranty period has expired, repair service is based on a minimum and maximum fee.
All returns must have a Return Material Authorization (RMA) number issued to them before
being returned. To obtain an RMA number please contact MSD Customer Service at 1 (888) MSD-7859 or
visit our website at www.msdignition.com/rma to automatically obtain a number and shipping information.
When returning the unit for repair, leave all wires at the length in which you have them installed. Be sure to include
a detailed account of any problems experienced, and what components and accessories are installed on the vehicle.
The repaired unit will be returned as soon as possible using Ground shipping methods (ground shipping is covered
by warranty). For more information, call MSD Ignition at (915) 855-7123. MSD technicians are available from 7:00
a.m. to 6:00 p.m. Monday - Friday (mountain time).
Limited Warranty
M
SD IGNITION warrants this product to be free from defects in material and workmanship under its intended normal
use*, when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date
of the original purchase. This warranty is void for any products purchased through auction websites. If found to be
defective as mentioned above, it will be repaired or replaced at the option of MSD Ignition. Any item that is covered
under this warranty will be returned free of charge using Ground shipping methods.
This shall constitute the sole remedy of the purchaser and the sole liability of MSD Ignition. To the extent permitted
by law, the foregoing is exclusive and in lieu of all other warranties or representation whether expressed or implied,
including any implied warranty of merchantability or fitness. In no event shall MSD Ignition or its suppliers be liable
for special or consequential damages.
*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. It is the sole responsibility of the customer to determine that this item
will work for the application they are intending. MSD Ignition will accept no liability for custom applications.
M S D I G N I T I O N • w ww .m s di gn it io n. co m • ( 91 5 ) 8 5 7- 52 0 0 • F AX ( 91 5) 85 7- 3 34 4
© 2007 Autotronic Con trols Corporation
FRM28951 Revised 08/07 Printed in U.S.A.
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