you can check it by connecting a test meter thats been set on volts,get some one to rev engine,if the alternator is gone,then you will get no fluc,in reading,i.e.12v up to 13.5 v also check the battery leads for sign of corrosion,also check the connections at the alternator
MM
May 2011
thats norm the alternator ,or battery not holding charge
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.