Recently bought Varadero 125cc now completely unresponsive

[Kaiser125cc]

Hi peeps, I recently bought a Varadero for once I have completed my CBT. I was attaching oxford heated grips, wireless quadlock, and a carplay.  When they were attached, I heard a faint buzzing noise from the battery area and now the bike is completely unresponsive. I did take the battery out and charge it for a bit in case it died, plugged it back in and the dashboard lights flicked a  bit then straight off. I have checked all the fuses to see if its any of them and they are all good. Any help would be greatly appreciated as this is my first bike and I still have a lot to learn. I will add it still is under warranty.

[atimofejev]

Did the bike start and run well before add-on components were connected?

What is the state of the battery? Did you test it before reinstalling?
Where did you connect the heated grips, directly to battery? Do they have their own fuse?

Can you disconnect all newly installed electrical components to test?
Possibly, you have installed a faulty device or wired it wrong.