6421 Datasheet, PDF (23/28 Pages) Mallory performance club – The MSD produces full power multiple sparks for each firing of a plug

INSTALLATION INSTRUCTIONS
  WIRING ATOMIC WITH PN 6421
*Do NOT connect the small Red wire to the coil (+)
terminal when using an MSD Ignition or other CD
ignition control.
PINK - FAN 2 PROVIDES GROUND
TAN - FAN 1 PROVIDES GROUND
BLACK - GROUND
FUEL
PUMP
HEAVY RED - BATTERY _{HEAVY ORANGE}
TO NITROUS 12V
ACTIVATION WIRE
* RED - IGNITION SWITCHED 12V
BLACK
GROUND
O2
SENSOR
23
ECT
SENSOR
INDICATES CONNECTION
MAG PICKUP
NOT USED
INDICATES CONNECTION
TO 12V
ORANGE TO AC INPUT
WHITE
YELLOW
NOT USED
GRAY
RED - IGNITION SWITCHED 12V
IGNITION
KEY
2-STEP/LAUNCH
(12V TO ACTIVATE)
BLUE
VIOLET (+) GREEN (-)
HALL-EFFECT WHITE/BLUE
(NOT USED)
TACH OUTPUT
RED
GRAY
HEAVY RED
TO BATTERY
HEAVY BLACK
TO BATTERY
(NOT USED)
WHITE
+
ORANGE (TO COIL +)
BLACK (TO COIL -)
GREEN (-) VIOLET (+)
Orange (+) and Black (-)
are the only wires that
connect to the coil.
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