this is the situation i bought my car a week ago...while i was driving it i noticed the turning signals were not working...i thought it was a problem with only the turning signals..i turned my car off and the next few days my car wouldn't start.... i replaced my old battery and got a another battery from a used shop...then the next few days im having the same problem ....im wondering is that a problem with my alternator...but i know that an alternator suppose to charge the battery while the car is running...so would this be a problem with the alternator or something else?