You didn't mention anything about blowing fuses, so it must be before to that. I would look at the alternator, blown diodes can let current flow into the alternator when not running,draining the battery. Or, if it's not a short, just a power drain, you might put a ammeter on the positive side of the battery (between the battery and the cable), you shouldn't see any draw with switch off (clocks have a very low draw). If it is drawing disconnect one thing at a time to trace it. I had a vehicle with a similar problem (it was new) and after several return visits I found the trunk light switch had come loose letting the light stay on and was draining the battery as it set, of course with the trunk closed it wasn't seen and with it opened it appeared as normal. I actually found it when it came in again to have the drain checked and a wing installed, when I drilled the first hole, low and behold the light in the trunk shown through.
[ May 22, 2003: Message edited by: woodz428 ]</p>