GM Coil and Module Help Required
Make ABSOLUTELY certain of your coil wiring RE: the two terminals together. I ran into "some coil" where the two siamesed terminals were NOT electrically the same.
This is the go-to diagram
1..Make absolutely certain the module mounting holes are grounded (electrically) and that the "tit" has been cut off so it sits flat on a heat sink
2...Pay attention to the pickup polarity as they affect timing what is called "rotor phasing
3....CHECK with a light or meter at coil + WHEN CRANKING as well as with key in "run" position to see if you have battery both times.
You MUST pick up the (usually brown) IGN2 bypass circuit wire or you will not have voltage when starting. The "run" IGN1 line goes DEAD in "start."
EDIT: Finally found it. THIS is what I'm talking about on the coil wiring
Make ABSOLUTELY certain of your coil wiring RE: the two terminals together. I ran into "some coil" where the two siamesed terminals were NOT electrically the same.
This is the go-to diagram
1..Make absolutely certain the module mounting holes are grounded (electrically) and that the "tit" has been cut off so it sits flat on a heat sink
2...Pay attention to the pickup polarity as they affect timing what is called "rotor phasing
3....CHECK with a light or meter at coil + WHEN CRANKING as well as with key in "run" position to see if you have battery both times.
You MUST pick up the (usually brown) IGN2 bypass circuit wire or you will not have voltage when starting. The "run" IGN1 line goes DEAD in "start."
EDIT: Finally found it. THIS is what I'm talking about on the coil wiring