MSD 6421 User Manual

INSTALLATION INSTRUCTIONS 19
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CHRYSLER IGNITIONS Wiring a Late Model Dodge with 2-pin connector.
BLACK/GRAY
OR GRAY
GREEN/
ORANGE
MAGNETIC PICKUP
(NOT USED)
FROM IGNITION AMPLIFIER
(ORIGINAL COIL - WIRE)
FROM IGNITION KEY
(ORIGINAL COIL + WIRE)
IGNITION KEY
TO 12V
HEAVY RED
HEAVY BLACK
TO BATTERY
TO BATTERY
+
ORANGE (TO COIL +)
BLACK (TO COIL -)
RED
GREEN (-)
VIOLET (+)
WHITE
BLUE
WHITE/BLUE
HALL-EFFECT
(NOT USED)
2-STEP/LAUNCH
(12V TO ACTIVATE)
GRAY
TACH OUTPUT
NOTE: Original wiring must be cut.
MSD offers two direct plug-in
harnesses; PN 8889 for '90-'97
and PN 8884 for '98-'03.
HONDA IGNITIONS Wiring a Honda with Internal Coil.
BLACK/YELLOW WIRE
COIL
WHITE/BLUE WIRE
COIL
DISTRIBUTOR AND COIL
ASSEMBLY
C+
C-
+
ORANGE
BLACK
RED
WHITE
BLUE
WHITE/BLUE
HALL-EFFECT
(NOT USED)
2-STEP/LAUNCH
(12V TO ACTIVATE)
MAGNETIC PICKUP
(NOT USED)
GREEN (-)
VIOLET (+)
HEAVY RED
HEAVY BLACK
TO BATTERY
TO BATTERY
+
GRAY
TACH OUTPUT

MSD 6421 Specifications

General

Brand	MSD
Model	6421
Category	Control Unit
Language	English