6421 datasheet(12/28 Pages) MALLORY

12 / 28 page

INSTALLATION INSTRUCTIONS

MSD • W W W. M S D PE R F OR M A NC E . C OM • ( 91 5 ) 8 55 - 7 12 3 • F AX ( 91 5 ) 8 57 - 33 4 4

MSD SYSTEMS

With an MSD Timing Control (points or amplifier).

TRIGGER (IF USED)

MSD CRANK

TRIGGER WHEEL

DISTRIBUTOR

WITH

MAGNETIC PICKUP

DISTRIBUTOR

SWITCH

12V

LINELOCK OR

TRANS BRAKE

SOLENOID

2-STEP REV

LIMITER CIRCUIT

TIMING

CONTROL

UNIT

TO GROUND

BLACK

INDICATES CONNECTION

•

IGNITION

KEY

TO 12V

MAGNETIC PICKUP

(NOT USED)

HEAVY RED

HEAVY BLACK

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)

RED

WHITE

(NOT USED)

FROM IGNITION KEY

(ORIGINAL COIL + WIRE)

GRAY

TACH OUTPUT

MSD SYSTEMS Typical Drag Race Setup with Timing Control and Two Step Selector.

MOST TIMING

CONTROLS

TIMING

CONTROL

UNIT

CONTROL

KNOB

IGNITION

MAGNETIC

PICKUP

(NOT USED)

TO GROUND

BLACK

INDICATES CONNECTION

•

IGNITION

KEY

TO 12V

MAGNETIC PICKUP

(NOT USED)

HEAVY RED

HEAVY BLACK

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)

RED

WHITE

FROM

IGNITION KEY

(ORIGINAL COIL + WIRE)

FROM POINTS

OR ELECTRONIC

IGNITION AMPLIFIER

(ORIGINAL COIL -

WIRE)

GRAY

TACH OUTPUT

6421 Datasheet(PDF) 12 Page - Mallory performance club

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