2010 Sportsman 400 HO no start with key

Greetings all,

Been searching the site but can’t find the answer I’ve been looking for so this is my first post here.

I’ve got a 2010 400 HO that’s been pretty good to me until now. I’ve got the whole thing torn down tracing wires trying to trace a no-start condition. Replaced the solenoid because jumping it with a screwdriver got the engine to turn over but after replacing it I’ve got the same problem. I’m not going to throw money at parts to hope I get it right so what sends signal to the solenoid?

My key turns on the panel, it reads miles and all but just won’t turn the engine over. Everything else works on the bike so I’m missing something..What??

I’m guessing maybe key switch or the panel itself but again, not just going to throw money swapping parts. Thanks.