Ok, here’s the best I can offer based on the account so far
The video suggests the starting solenoid is firing, but there is something with high draw preventing starter from going.
is that a red wire toed to battery ground? If so, does it belong there? Is it a ground?
View attachment 75906
Next, - follow these instructions exactly
Make sure the bike is OFF and in neutral.
Test starter
-Remove the positive wire from the starter, push it out of the way.
- disconnect bike negative from bike battery.
- Connect a black side jumper cable to bike starter housing, then to a car battery negative terminal
- Connect the red side of the jumper cables to the positive on car battery.
- Touch the red side jumper to the power lug on the bike.
If the starter spins up, your starter is ok. If it doesn’t, your starter has an issue.
Report back after testing for next step.