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

Hey there. needing help with some issues....

VRIN- VRIN+ OPTOIN- OPTOIN+ need to know which one runs off a regular tach signal.

any help would be greatly appreciated.

I used the option+ pin 30 too the tach signal and the option- pin 31 grounded. That worked well for maybe 1 1/2 hours then no signal. Then i installed a diode inline on the option+ and that fixed it.