Mark, it is NOT a wiring problem. It is a master-switch problem. I am not sure if there was a bad batch of these, since not very many x70 folks complain about them and mostly it seems MY98 cars that exhibit the problem. If your car is under warranty, get a new master-switch and most likely the problem will be solved for good. I actually took my master switch apaprt and after not seeing anything wrong inside there put it back together thinking that I will have to go to the dealer, but ever since I opened the switch, worked the contacts, looked at its innards and put it back together, it has worked like a charm. Maybe there was some slight assembly problem with the actual switch part and openning it up and reassembling it solved the problem. I do not know, but it's been way over a year and the thing is working perfectly still (knock on wood).
Good Luck
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