Carbs? Yes?  No?

EFI

Blue wire.  Pin 18 (assuming 79 system).

Edited March 27, 201510 yr by Zed Head

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

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