I have bought three CDI boxes. Put them on my banshee and they are not allowing it to fire. Took them to a buddy of mine and they don't fire on his either. Is there something in my wiring that could be frying them? I have a new stator and pickup coil. Also a new ignition coil. Key switch and kill switch test good. I also have checked harness for continuity and all looks good. Any thoughts????