Street Triple Cutting Out

My friend 2015 Street triple cut out while going round a bend , the bike would only restart after the key was turn off and on many times . The bike was taken to a dealer and plugged in and no faults were found . But since then the bike has been randomly losing power only rectify by turning off and would not start after refuelling for 15 mins.Any ideas ?

 

loose relay or connection

 

Check wiring loom at the steering head for broken wires