I have a 2010 street glide. When I use my turn signals they blink fine until I press the brakes, when the turn signal is on and the brakes are pressed the rear hazards flash..then letting off the brake the turn signal works fine. What could the problem be?

 

Do you have the adapter for the brake/turn/running lights? If so, it could be a short in that. I had issues with a couple of them on my '11 UC and had to replace it. I'd try removing it and see if things work normally, that is a quick and easy check.

 

Did you do an LED upgrade