Holley RPM signal help!

[75z28]

Holley RPM signal help!
I originally used pin A28 when setting up initial analog sensors. During the remote in we found the RPM section if the ecu was corrupt(fried?) and I don't know if the holley output would cause that so I don't want it to happen again.
Holley outputs a 12v square wave signal according to their website. Is that what turbolamik needs? Was my computer just bad initially?

I cant find an answer on how to hook up RPM signal. This is from Holley:

[zeroto60]

I have only set them up using a 5v crank sensor signal, so that 12v may have overloaded the Turbo Lamik.

[tdx275]

Holley RPM signal help!
I originally used pin A28 when setting up initial analog sensors. During the remote in we found the RPM section if the ecu was corrupt(fried?) and I don't know if the holley output would cause that so I don't want it to happen again.
Holley outputs a 12v square wave signal according to their website. Is that what turbolamik needs? Was my computer just bad initially?

I cant find an answer on how to hook up RPM signal. This is from Holley:

How did you go with the RPM signal going though Holley ecu Iam doing this now the A28 seams to be the one . How did you go . Thanks

[M4comp]

If your crank sensor is a hall, just piggy back that and share it to the ecu and the lamik.

If you are trying to do the same with a VR sensor you can use a VR to Hall converter.

If you want to use a tacho output from an ecu and the output has no 5v peak setting in the software you should use a voltage divider. Which is just two resistors that drop the voltage to the range you require.