Ign. coils...9v or 12v???
My understanding between 9v or 12v OUTPUT ignition coils,is the 9v (for points-style dizzy) has a recessed hole in top,so the lead from centre of points dizzy cap plugs INTO coil....and 12v OUTPUT (for example for Bosch electronic ign.-from a blue motor) has `male` pin in top of coil that plugs into lead. I just purchased a Bosch GT40T coil (squarish shape,not the round `beer can` shape) but it has a recessed hole...so I`m thinking its the wrong one if I want to run it on elect. dizzy and 1.5mm plug gap....besides the lead would then be wrong.
If I take it back,can someone recommend the proper 12v output bosch coil I should have???