Engine Speed Sensor
The engine speed signal comes from terminal No. #7 HEI module in the distributor. Pulses from distributor are sent to ECM where time between pulses is used to calculate the engine speed and the spark advance.
The engine speed signal comes from terminal No. #7 HEI module in the distributor. Pulses from distributor are sent to ECM where time between pulses is used to calculate the engine speed and the spark advance.