Quote:
Originally Posted by uwanna
The tach pulses are sent from the DME on DME connector pins #4 and #11. #4 blk/violet wire, #11 blk wire. These wires run direct to the rear off the tach. Pull the DME connecter loose and check their continuity with a multimeter to the rear of the tach.
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Pin 21 blk/violet wire is the ignition signal to the tach.
Pin 11 blk wire is the fuel injector pulse widths for the CASIS light.