LM2917 tachometer cirquit problem!

MikeMl said:

Look at the coil (primary) signal with an oscilloscope. After you see what is there, design a circuit to work with that signal. You are grabbing a design off the internet with no understanding of what you are connecting it to.

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Yes you are right because I dont know a lot about electronics. I think that all the 4cylinder cars with one coil and distributor have the same signal. So, I grabbed the the cirquit of the man that put that on a VW Beetle and has the same ignition with mine. So if I am beeing boring please excuse me but I dont know about that and I need your help. Thanks!

panosrc said:

.... I think that all the 4cylinder cars with one coil and distributor have the same signal. So, I grabbed the the cirquit of the man that put that on a VW Beetle and has the same ignition with mine. ...

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Is this is a Kettering Points-Condensor-Coil-Distributor type of ignition, or is it a more modern transistorized ignition with an ECU?

MikeMl said:

Is this is a Kettering Points-Condensor-Coil-Distributor type of ignition, or is it a more modern transistorized ignition with an ECU?

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My ignition consists of an ecu-ignition module-ditributor

If it's a module like this

then the safest place to get a signal from would be the pickup coil of the distributor.