126 Electrical short

[jackmac]

I've been having a problem with the battery in my 1985 380SE going dead. I had the alternator replaced in October. In mid-November, dead battery. Checked the alternator (which was rebuilt) and it's fine. Battery charged back up and held for a few weeks. Tech said it was a short, possibly in the interior lights. Well, now the battery is dead if the car sits more than 24 hours. I use a booster box and she starts right up, but if the car isn't run every day, the charge runs out. I disconnected the wiring harness from the main interior light to see if that made any difference, but it didn't. If I start the car with the booster, it charges right back up and will restart all day long. Once I park it overnight - dead.

Any ideas?