[frankym]

the relay I spoke of was my fan relay, which was providing the switched on power, although it does seem like that thin red wire from the control box ought to be linked to swiched power so that it doesn't have a live wire to it, although that should really make a difference. I have compiled a list of things to on my next box, if anyone can add to the list that would be helpful.

1. Run the spark test properly by jumping the purple and green wires with the center wire sitting next to a ground to isolate problem to control box only.
2. Install rubber vibration mounts
3. Install capacitor (MSD 8830 noise reducer) in line on the thick red power lead and ground it to the frame.
4. Install an in line fuseable link between the capacitor and the box with a 7-10 amp fuse.
5. Bypass the ballast resistor.
6. Reposition coil so that it is harnessed in the middle.