Are you blowing the main fuse? My friend rides a 2006 Speedmaster and was having the exact same problem but was blowing fuses too. After replacing the ignitor, coils, wires and everything that we could think of he was still having the problem of only firing on one cylinder and blowing fuses intermittently. Finally we were able to find the problem. Where the wiring harness passes throught the bracket that the coils attach to on the frame, the clips that the coils screw to are sharpe and wore through the insulation on the wiring harness. It was hard to find and luck played a part in our discovery of it but since we patched it up and tie wrapped the harness up to the frame, he has not had any further problems. I looked this on my 2002 America and found that the clips were waring on my harness as well so I tie wrapped the harness up to the frame. I would suggest that everyone do the same to avoid some major headaches. The clips that the coil screw to are the culprit!
