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Most GM engines with the EST ignition system have 2 plugs going into the ignition coil, the gray connector typically has a purple wire and a gray wire, the purple is your power "feed" wire & the gray is an analog tach signal wire. SOME engines beginning around 2004+ have eliminated the gray tach feed, this is needed for driving either a Perfect Pass or analog tachometer.

This plug is used if your coil is missing the tach wire & you need this for a replacement analog tach signal.

Used when installing a TRD Conversion kit into a boat with a bad MMDC controller and no analog tach signal is present.

Kit includes 24' gray marine wire, 8" of the Pink/Purple wire and coil plug.

GM Tach Sender Kit (MMDC)

SKU MEE-0060

Regular price: $35.95

Most GM engines with the EST ignition system have 2 plugs going into the ignition coil, the gray connector typically has a purple wire and a gray wire, the purple is your power "feed" wire & the gray is an analog tach signal wire. SOME engines beginning around 2004+ have eliminated the gray tach feed, this is needed for driving either a Perfect Pass or analog tachometer.

This plug is used if your coil is missing the tach wire & you need this for a replacement analog tach signal.

Used when installing a TRD Conversion kit into a boat with a bad MMDC controller and no analog tach signal is present.

Kit includes 24' gray marine wire, 8" of the Pink/Purple wire and coil plug.

Quantity

Product Description

Most GM engines with the EST ignition system have 2 plugs going into the ignition coil, the gray connector typically has a purple wire and a gray wire, the purple is your power "feed" wire & the gray is an analog tach signal wire. SOME engines beginning around 2004+ have eliminated the gray tach feed, this is needed for driving either a Perfect Pass or analog tachometer.

This plug is used if your coil is missing the tach wire & you need this for a replacement analog tach signal.

Used when installing a TRD Conversion kit into a boat with a bad MMDC controller and no analog tach signal is present.

Kit includes 24' gray marine wire, 8" of the Pink/Purple wire and coil plug.