00 Trx 90 No spark?

I have a 2000 Trx 90. Not getting any spark. No power to the coil. There is a yellow wire running off the stater and it seems that its the only wire that has power. I believe there is something wrong with the neutral safety switch. I was told that the yellow wire could be for a headlight. I tried grounding out both connections coming off the neutral safety switch. Still no spark. If there is power coming off the yellow wire when i pull it i know the stater is bad. What to do now?