sometimes when i turn on my car, then turn my headlights on my car dies. i cleanded the ground from the battery to the body and it worked fine. but now the problem happens again but rarlely.

when i wiggle the ground wire a little the problem goes away. is this just a bad ground wire??

 

sounds like a corroded wire... or bad connection... check ur alternator for loose connections.. and battery voltage with all acc. on at idle should be around 13.5-14.5volts.