2006 Street Glide my left turn light on the dash stays on but neither the front or back turn light will work also the red Key security system light on the dash is on and will not go off. Anyone have any suggestions?

Your security key light indicates a fault issue--best and easiest is to have a dealer service dept. put it on their digital tech and read the code. Hopefully, they won't charge to simply read the code, and it might be something simple, but repair will cost. Someone familiar with how to retrieve code manually can also do this, but to identify the cause, factory service manuals are necessary.