91 318.
Still wondering about the properties of #74 "Engine Speed Output" which heads off to the instrument cluster assumingly to drive the tach. Does anyone know if this is an intermittent ground and if so, how many pulses per rev?
Also wondering about #66 "Start input". This is branched-off where the ignition switch sends power directly to the ignition coils. We're guessing it's really more of a
Run Input just telling the ECU that the key is on and its time to work.
A couple more Mutt pics for your amusement:
Topic: ECU pin 74 & 66? (Read 2347 times)