It really has not been a big concern for me, but yet an annoyance. I have a 1990 5.0 GT and if I am at idle it stays lit until my engine revs a little higher and it will start to blink. It seems to be dependant on my alternator which is unusual because most cars, when the battery is dead the relay will still make it blink no slower or faster. I have changed the flasher relay, but nothing. My hazard blinks at a normal rate, but not my blinkers. Ohh and second thing my car likes to almost die when I put it into P or N when shifting out of gear on my AOD, just thouht I would throught that in.