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Yellow: Connects to the MSD Ignition’s White wire or Points input terminal. Green/Violet: This 2-Pin connector plugs into the MSD crank trigger pickup or magnetic pickup of an MSD Distributor. Blue Loop: This loop controls the amount of retard that occurs during cranking. Cut the loop for 20° of start retard. Seal the wire ends.[PDF]
Start and Step Retard Control PN 8987
This 2-Pin connector plugs into the MSD crank trigger pickup or magnetic pickup of an MSD Distributor. (Never use when the White wire is used). White: "Points" or Amplifier Input. Connects to points or amplifier trigger. (Never use when the mag pickup is used). Pink: Retard activation wire. Activated when connected to 12 volts.
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