4 Pin Hei Ignition Module Wiring Diagram. Based on the gm hei module will allow you to get a replacement module nearly anywhere. Above are all for the 4 pin hei module.
A wiring diagram to connect the msd power grid system controller to a 6al can be found in. I have an old msd wiring diagram from a magazine. The 8 pin hei module is essentially the same as the 7 pin hei module except for the additional ground wire g.
Ford gm hei coil question the h a m b.
Notes on wiring for a points distributor. Gm ignitions wiring an hei 4 pin module magnetic pickup trigger. Gm hei 8 pin ignition module wiring diagram for tbi the gm system expects a more modern coil as well one that is powered by 12v at all times versus the oem coil that needs 9v during regular running and 12v at start. Gm ignitions wiring an hei 4 pin module magnetic pickup trigger.