Hi Everyone! '69 Camaro - When I turn the turn signals on, so long as the courtesy lights/head lights are not on, the front and rears flash normally. With the courtesy lights on, the rears are normal. However, the fronts while extremely difficult to tell, still blink but if you didn't look closely, you wouldn't notice. Not sure, but I think I have had this issue since the front end was reassembled after a collision. Thanks for the help!