6462 Datasheet, PDF (16/24 Pages) Alpha Wire – Customer Specification

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INSTALLATION INSTRUCTIONS
  GM IGNITIONS  GM Large Cap HEI Distributors
There are three different large cap HEI distributors. To indentify
which of the following diagrams fit your specific application, remove
the distributor cap and rotor and locate the ignition module at the
base of the distributor. Count the number of terminals on both ends
of the module and follow the corresponding diagram. GM used 4,
5, and 7-pin modules in these distributors.
NOTE: Some 5-pin models may experience a hesitation or stall
on deceleration. If this occurs, contact MSD Tech Line
for the required bolt-in diode to correct the problem. MSD
Tech Line [phone].
  GM IGNITIONS  Wiring an HEI 4-pin Module (Magnetic Pickup Trigger).
NOTE: The GM Ignition Module is removed and replaced
with the MSD PN 8861 Wire Harness.
M S D  •  WWW.MSDPERFORMANCE.COM • [phone] • FAX [phone]