I have a 1968 bug. The front has LED for flashers and the rear has teardrops. When I put the flasher on the indicator light comes on but does not flash. Is there a way to check the flasher prior to chasing down all that wiring? Yes I have checked the bulbs.
Try using a 'heavy duty' flasher. They will flash LED's. I am using LED's in front and regular bulbs in rear and it works fine with a heavy duty flasher.