Hei conversion troubleshooting

got a scope or a DMM that measures frequency? Chuck the distributor in a variable speed drill and measure the trigger frequency at varying speeds off the module. You may be able to do this by measuring continuity on an analog meter from trigger to ground but the faster you go, the smaller the needle sweep will appear as needle sweep is slower than a scope resolution. 3000 RPM is 1500 spark events X8/M coil triggers (12000) or 200 cycles per second (Hz) . old scopes usually are 10KHz and above, here is a simple 200KHz one for $23! great little toy tool that would actually work in this manner.
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DSO138 Fully Welded Assembled 2.4" TFT Digital Oscilloscope (1Msps) + Probe US | eBay