Ok so recently my fan belt for the alternator and water pump started to rapidly stretch. Last night i had to get the car home ( wasnt leaving it on the side of the raoad). The battery held at 12v. BUT with the headlights on my right indicator stayed on. This was regadless of key position. Turn the headlight off and thr indicator worked fine but the dash lights flashed. NOW i have a couple of theories. Would a dieing battery cause this? I know the batteries old and will soon need replacing. secondly i know its most likely and earthing issue, but where should i look? In that circut, the main earth. And finally, switch?