How is the stock tack (ECM) working in terms of the trailing coil wire signal?Is the coil wire signal sending a ground or is it a power to the ECM each time it fires? Need to know to chang over to a differant type of tack.

Thanks Guys

 

Checking in to see if anyone has an answer.

 

Checking in to see if anyone has an answer.

 

The coils send an electrical pulse to the tacho. An aftermarket tach works the same as the stock one, so will work fine using that signal.