Technical information

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN, EL PASO, TEXAS 79936 • [phone] • FAX [phone]
www.msdignition.com email: [e-mail]
75
SOFT TOUCH REV CONTROL PN 8728
WITH POINTS/AMPLIFIER IGNITION
FROM POINTS
OR AMPLIFIER
DISTRIBUTOR
RPM
MODULE
INDICATES
CONNECTION
TO IGNITION KEY 12V
PN 8728
WHITE
GREEN
BLACK
RED
NOT USED
TO GROUND
VIOLET
+
SOFT TOUCH REV CONTROLS
The MSD Soft Touch Rev Control, PN 8728, is designed for inductive style ignition systems. It cannot be used with
an MSD CD Ignition such as any 6 or 7 Series Ignition Control.
The Rev Limit is set with plug-in rpm modules. When the rpm reaches the specified limit, the Control will randomly
drop the spark to the cylinders to keep the rpm at the limit. If no module is installed, there will be no rev limit.
Wire F unctions
Cylinder Programming Loops: There are two wire loops, Red and
Blue under a small cover on the side of the Control. For a 6-cylinder
engine, cut the Red loop. For 4-cylinder applications, cut the Blue and
Red loops.
Note: MSD also offers another Soft Touch Rev Control, PN 8738. This
Control can only be used with an MSD 6T, 6TN and 6-HVC Igni-
tion Control.
Note: This Rev Control is not recommended for Chrysler Gold and
Chrome Ignition boxes.
Red: Connects to a switched 12 volt source.
Black: Connects to ground.
Trigger Pickup Wires:
Green: Connects to the coil negative (-) terminal.
White: Connects to Points or Amplifier trigger wire.
Violet: Connects to the magnetic pickup positive (+) wire.