where does power that feeds coils hook up to coils from??Have a coil not getting power to either post..ground is good coil is not firing.Does not appear to be getting power on either terminal on top of coil.
When the key is on, the black with white stripe wire should be showing 12 volts or more (depends on battery strength). Neither terminal should show ground unless the engine is running! The ignition module (ecm) provides the ground in accordance with proper timing.