MicroSquirt.com read only forum (Jan.15,2018)

awesome - connected opto- to ground and it read RPM. the fuel pump relay kicked in as soon as I grounded it - tunerstudios showed a rpm jump, scared me half to death haha. but I cranked it over and it's reading RPM. you may be right about needing to take a signal from both coils - which is odd to me ...

hey thank you for the quick reply.

the banded end of the diode is facing the coil. I wired it according to that diagram initially (matt's), and received no rpm input either. My wiring is exactly the same, minus the connection to coil 1&4. i'll try grounding opto-. im guessing that if I did not use ...

im having a tough time getting my microsquirt to read rpm. it's a fuel only install on a waste spark ignition system. using only one coil, the optoin- is connected to the 12v constant side, the optoin+ is connected to a diode and 1kohm resister in a Y pattern - the diode to the switched side of the ...