ecu pinout question

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Nov 14, 2008 | 07:04 AM

JBLAZE622

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From: all over, CT

ecu pinout question

i was wondering if anyone knows wich pin is for the distributor tach signal for an OBD1 ECU

Nov 14, 2008 | 07:11 AM

GhostAccord

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From: East Coast 506, Canada

Re: ecu pinout question (JBLAZE622)

The tach signal does not go to any pin on the ECU. It goes directly from the ICM, in the dizzy, to the tach/instrument cluster. The Vehicle Speed Sensor (VSS) is B10

Nov 14, 2008 | 07:50 AM

Relic1

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Joined: Oct 2002

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From: chicago burbs, Il, USA

FV-QR

A21 & A22 are the ignition signal, but it's different than the actual tach signal.
Blue wire on the back of the cluster, driver's shock tower, or at the distributor.