Car early type electronic rev counter

[Murphyv310]

It sure does, that's how it senses when the points open. The impulse type as one lead that goes to the coils CB connection or 15 (memory may be wrong with the actual number) for the signal.
This video shows me calibrating this early type that has the loop through from points to coil in the Aston Martin.
https://youtu.be/TBS119WwHg0