MSD 6631 6 HVC, Professional Race with Rev Control Deutsch Connectors Installation User Manual
Mounting, Wiring
MSD 6-HVC Professional Racing Ignition
with Rev Limiter
PN 6631 and PN 6632
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.
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
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.
Points: The single White wire of the MSD is for points triggering. It connects to the points/amplifier out-
put 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.
ORANGE
BROWN
GREEN
VIOLET
RED
BLACK
(+) COIL
TACH
(-) MAG
(+) MAG
(+) 12V
(-) COIL
6
5
4
1
2
3
BLACK
RED
VIOLET
ORANGE
BROWN
GREEN
Figure 1 Wire Functions of the 6-pin Connector.
IMPORTANT: Read instuctions thoroughly before attempting installation.
1 - 2-Pin Deutsch Power Harness
1 - Parts Bag (4-Vibration Mounts, 4 RPM
Modules)
1 - 2-Pin Deutsch Connector
M S D I G N I T I O N
• 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