Gm Ignition Module Wiring

There were a number of different kinds of general motors hei modules.

Gm ignition module wiring. Tach signal is a purple wire with a white trace pin r goes to ampseal optoin pin 30 ground the ampseal optoin pin 31 at the distributor. 7 pin module large electronic module that does timing control used with coil in cap distributors top right. This electronic ignition system operates with full 12 volts. The 7 pin hei module.

Not only that you dont need any expensive tools to do it. Gm 4 pin hei electronic ignition control module wiring connectionsdiagram with a magnetic pickup coil. With a gm hei 7 pin and 8 pin modules the ignition module wires you need to know about are. These have 5 volt logic level spark outputs instead.

General motors hei ignition control with megasquirt ii. 4 pin module electronic ignition but doesnt do computer timing control top left. The ignition control module is responsible for turning the ignition coil on and off. Now autozone can test it for you if you remove it and take it to them but for those of you that cant afford the time this involves or for those who want to add another diagnostic technique to their toolbox of know how this.

7 pin module small electronic module that does timing control. If your gm vehicle has a slow or hard start the ignition control module should be tested with an electrical test. Advance control signal is a white wire pin e goes to ampseal pin 12. This process allows spark plugs to light the gasoline vapors at specific times allowing the gm engine to start once the ignition coil is signaled.

If you need to run a distributorless ignition where the coils need an external ignition module our quadspark is a great. A basic ignition module while some megasquirt versions have ignition modules built in many versions do not including the microsquirt wire in ms3pros and many others.