Hy guys, it's been doing this since I got it, battery is brand new, tomorrow I'll replace all the fuses, and splash some contact spray, I did clean the dash connector with no success, this bike isn't mine it's been left to me by a friend who's gone abroad forever,

and I'm trying to make it a bike...

)
Here's how it looks like
https://youtu.be/bh-jznajROM, any ideas of a fix? Where to check and what? Thanks in advance.