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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Tach or Injector Signal help

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Old 05-28-2010, 11:26 AM
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Default Tach or Injector Signal help
Hey LT1 guys I need some help. I'm installing an APEXi VCR boost controller. One of the wires i'm trying to find is either the tach signal or injector signal. The manual I have isn't really showing me what i'm trying to find. So I'm needing to know which of the 4 connectors on the PCM it is and which wire it is. I am also running a MSD 6 BTM. Can I use the tach output on the MSD box?
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Old 05-28-2010, 11:36 AM
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Default Tachometer output
Find the C220 connector (BLUE), Pin D, white wire.
Or you tap into the same wire closer to the PCM, red connector, Pin A13, white wire.
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Old 05-28-2010, 09:08 PM
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Originally Posted by ss.slp.ls1
Find the C220 connector (BLUE), Pin D, white wire.
Or you tap into the same wire closer to the PCM, red connector, Pin A13, white wire.
Hey thanks man. I appreciate it. I will go for the red connector.. Pin 13..White wire. Hopefully by typing it out I will remember it.
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