I don't know what he's using on that custom engine. But in general, CPS uses a magnetic sensor or an optical sensor (e.g. Nissan Optical CAS).

The sensor here is a magnetic type. The third wire suggests it has an amplifier built-in making it a hall-effect subtype.


Because it is a single sensor, it can only detect one thing (e.g. Cam Position or Crank Angle, but not both).

combo unit - Crank Angle Sensor/Cam Position Sensor
* Mazda B engines used either magnetic version Combo sensor or mitsubishi Optical version


These are fitted on the back of the cylinder head on Miatas.