Battery Problems please help!!!!

check your'e brake/tail light harness in the trunk.it may be shorted out or together.but you are gonna have to find the short. i've see the turn signal switch being worn out do this too.because of the turn signal brake light cancell switch is in there too. i've seen the wiring harness in the column rub through also.like redfish said, rule out the easily accessible stuff first.but the brake light is a clue. if the gauge is going to discharge when you hit the pedal.chances are pretty good the problem is in that system. good luck and keep us posted.