Don't want to disappoint you, but bike indicators don't have a great following. Because they are not universally fitted to bikes, motorists are not expecting to see them. So even if they are working, you cannot rely on them and still need indicate with hand signals that you are turning.
This version assumes you a wearing a backpack as well and backpacks are sweat generators and usually avoided for decent length rides.
Sorry, but I hope you can get yours to work. It might help to reinforce intentions, but double check that the motorist has seen your intentions.