Gm Hei Ignition Coil Wiring. There are three main components in an HEI. One is the resistance power wire.
For better performance see Tips at beginning of this article. To test the resistance of the coil remove the coil cover so you can see the red and yellow wire. All my videos are in 1080p so check that outjust an idea on how the GM HEI electronic distributor is wired up thanks for watching and please subscribe.
Tach signal is a purple wire with a white trace pin R advance control signal is a white wire pin E override cranking signal is a tan wire with a black trace pin B.
To do this you will need a 14-inch nut driver and a multi-meter. Instead replace the coil right away. Notes on wiring for a points distributor. The 7 Pin HEI Module.