Gm 4 Pin Ignition Module Wiring Diagram. The msd 6al then considers the bosch hei ignition module to be a. Pertronix chevy flame thrower ignition module replacement for gm hei distributor 12387 52.
Thick film technology on alumina ceramic substrates removes. If you need to test the 7 pin older ignition module the following tutorial will help. Original wiring the oem wiring for the duraspark is shown below where the ignition module has a two pin connector and a four pin connector.
I just finished adapting a gm 4 pin hei module to take the place of the stock bosch unit.
The solid state electronics provide high coil out put and superior reliability. Large cap hei for tbi engine. Gm module wiring diagrams. Mar 5 2019 gm 4 pin hei electronic ignition control module wiring connectionsdiagram with a magnetic pickup coil.