check boot and glovebox lights are going out when closed.when you say dies-have you checked battery voltage when it has died?what voltage is across battery when started and ign light out should be just over 14v.are interior lights on a delay,if so make sure they are also going out.also after its been left over night, have a feel at relays to check if any are hot which could indicate if any are stuck on.
k
January 2013