Another MSD problem.

[Zed Head]

Carbs? Yes?  No?

[Clark Rush]

EFI

[Zed Head]

Blue wire.  Pin 18 (assuming 79 system).

Edited March 27, 2015 by Zed Head

[Clark Rush]

ECU has a trigger wire going to the negative Coil term factory system,that wire is Jacket'd don't know its color. colors at the module to coil we're green and yellow not factory,I've noticed some post state that a tach adapter is not required other say it is required

[Zed Head]

Tach adapter for tach.  Pin 18 to trigger injectors.  FSM.  Engine Fuel system.