I need to know which wire in the plug on the top of the intake manifold (the square one) on an XH tells the coil to fire. I know the pink and blue on is for the tacho? but I need to know the other (positive) side. I can run all the way to the back of the coil but I need to keep the wire I am hooking in here as short as possible. The reason will become evident later (maybe)

Never mind. Sorted it out myself. Now I can roast marshmellows