So as the title says, when i change my radio station to Am and listen to some stations, it doenst come in very clear. Not as clear as the stock radio. But when im stopped and use the turn signal i hear clicking in the speakers. Its very annoying. Whenever the turn signal blinks the speakers make a clicking sound.

your antenna is picking up the voltage surge from the flashers cutting in and out. It is not unusual because am radio waves pick up alot of signals from outside interference. As far as your weak reception, it is also normal when you add an aftermarket head unit to our car. You can try a signal repeater or booster to help strengthen your reception. I just decided to get sirius and never rely on terestrial radio at all.