hi im thinking of buying a m reg land rover discovery but a couple of days ago the guy im going 2 get it off tryed 2 fit a cd player and he said there was a spark from the wires i assume he touched them together now the disco wont start and its drained the battery he said if u put jump leads on it the ignition lights come on but engine doest turn over. Does any1 know what the problem will be before i buy it hope some 1 can help thanks dave