All good, man. Just teasing about.
Yeah, remove the seat latch release and the main ground of the negative battery cable will be under a fastener into the upper right of the gearbox.
Take the fastener out, clean and sand all the surfaces.
Replace with a coating of petroleum jelly (Vaseline® aka Kiwi_Roy's VooDoo Magic 'LectricumJello).
Consider using a "star" washer to dig into the mating surfaces as well as treating the battery terminals to the same VooDoo Magic.
I have learned to love Caig DeOxit electrical spray. The "gold" has both a sealant and special electrical flow enhancers (my words . . .)
Turbo-VooDoo!
Here's a view of the Main Ground connection from behind with no rear wheel , swingarm, or fender: