4 pin ECU/2 terminal "single" ballast system OR OE (has a functioning 5th pin) 5 pin ECU/4 terminal "dual" ballast? or 5 pin aftermarket (non functioning 5th pin) which the last one can use a 2 or 4 terminal ballast. What coil and what ballast? Confirm that you are wired correct/reluctor gapped at .008". recent prob or happened since it was converted to electronic (as in wont start since converted)?. coil and ECU both need to be fed in ign2 (crank) and in ign1 (run). that'll get us started