I am getting a HKS SAFC this week, and I need to know where my ecm gets the RPM signal from. If you know, please let me know.
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The ICM. Its one of 2 white wires... not sure which one off hand though.-Brad-
89 Mustang : Future 60V6 Power
Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog -
It is pin C. See attached diagram. There may not be a wire in the connector for the tach signal, in which case you would have to add one.
Marty'99 Z-28 - Weekend Driver
'98 Dodge Neon - Winter Beater
'84 X-11 - Time and Money Pit
'88 Fiero Formula - Bone stock for now
Quote of the week:Originally posted by AaronComment
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Would I go with the signal going into the ECM (423) or the signal to the dash (121)?Comment
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ckt 121 (pin C)-Brad-
89 Mustang : Future 60V6 Power
Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blogComment
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