Hello r.barn i am trying to install the ls1 coils on my 99 ford 5.0 from an explorer which i have running in my 99 mustang gt. i just want to clear up the engine bay. the explorer engine came already with cam,crank,and trigger wheel. the only problem that i am having is that i do not know where to get the 5v trigger to make them fire since i have a stock computer with a built in module. i am running them in waste spark mode any suggestions or diagrams.it would really help thanks