[jwheel55]

Dear Scobrac
Whilst this isn't the total answer to your problem the fitting of a battery isolation switch is a good idea.Gives you the possibility of quick power disconnection in the event of a serious short or damage to feed cables . Plus it is a theft preventer to the opportunist thief. And whilst you car is stored less likelyhood of battery discharge. But of course the original problem needs sorting for peace of mind. Regards, Jonny