I am building a  custom bike with a Savage engine - I think it's an early engine , the serial number is   P401-106734.  I wired it all up, and had it running .   I now have the tank etc all fitted, so I tried it again - but this time, NO spark. It has a new coil and a new ECU.  I have an idea what might have gone wrong, perhaps a loose connection - but when wiring up, I wired a  lead from the ignitor to the starter solenoid as shown in the diagrams, BUT it only started while the starter motor  ran!   so I wired that lead to another power source and it ran OK.  But I don't like the idea that I have in reality not wired it right, and now it won't go.     I intend to re-wire the whole ignition now. I tested the coil, it is OK, so now I will try to test the ignitor.    any ideas please?