I'm 61 years old. I've been wrenching for about 50 of that. I've worked on more than my share of cars, trucks, motorcycles and aircraft, and a host of CNC machinery, formally trained on most. When you gain my level of experience, give me a call.And yet YOU think you can diagnose the problem without any actual troubleshooting.
Electrical systems can work one minute and then fail the next.
Further actual testing is needed.
As a side note, I also had a very similar issue on MY Intruder. So I have experience at that as well....