Are there any electronics gurus ouit there who can help me?

I recently purchased a kit to build shift lights.

It has the option to be built for cars that have a reluctor distributor OR for cars that use points, hall effect or have a low voltage input from the engine.

Which option should I build? The low voltage input from the engine version?

Should I use an input from the ignition coil or from the ECM pin A19 like stated in other threads?

Thanks in advance.

 

Use ECM A19. The S2000 uses four individual coils each mounted above the spark plugs.

 

Thanks. Is that a low voltage input though?

 

Did it work?

 

It does, but I ended up using a RPM test wire in the engine bay.

Its a loose blue, terminatd wire that is not attached to anything.
I think its near the master brake cylinder.