A freind asked me to look at his car-He said it ran fine until 1 day it wont start. Everything was dead when I checked -removed the batterie and charged it.I checked the headlights first -and they came on-as did all the other power accessorys. When I turned the key-nothing- no sound at all from the engine compartment. After turni ng the key-all the power worked-except -now the headlight wouldnt come on. Any ideas where I should start tracing down the problem would be appreciated. It should be noted that the car has been meticulisly maintained.