If you need to perform fixes on your Triumph Bandit 350 then it is always recommended to possess a Workshop Manual to use as reference just in case you want to know proven methods to remove a particular component including Dashboard and match it again appropriately.
Triumph Bandit 350 Workshop Manuals gives you unique diagnostic info for the vehicle so if something is wrong it will help you identify what the problem is and the best way to repair it. You can then analyse if you can do this yourself or if the job is just too big you can still book your Bandit 350 in with a local garage.
Triumph Bandit 350 manual