2005 rmk 900 lost spark need additional testing ideas

I recently went through the motor on my 2005 rmk 900 new rings, gasket kit, det sensor and water temp sensor. i had the sled all reassembled and it started right up and idled just fine. i had let it idle for about 10 min and i went to open the throttle a ways to rev it up and it revved up a little but died. it wouldn't start after that i check had fuel pressure, pump runs, but now it doesnt have any spark i tested the coils and the work fine and the stator ohms out right but i have no spark. i was told to disconnec a single black wire from the stator/ecu harness but can't find the defined wire. if i could get some ideas or help it would be great thanks.

i tried that both kill switch key and throttle switches no difference i tested my crank sensor for the spark and it seems to be sending a signal my ohm meter reads every time the tab passes the sensor