Volvo: Electrical Problem - 1996 Volvo 960, 1996 volvo 960, pep boys

Question
My volvo seems to have a slow discharge of the battery.  When the car is left in garage for several days, the battery discharges so the car won't start.  I put a new battery in about a year ago and had it replaced last month (under warranty) because I thought it was bad.  When replaced Pep-Boys tested alternator and found no problem.  I have checked lights in glove box and door jams - can't find any on.  What could be causing the discharge? The battery charges when I drive the car for awhile and the problem only occurs when it is left for several days.

Answer
Bernie,
Have the Pep Boys test for a draw on the system while pulling fuses to see what circuit has the draw. Now there is a small amount of parasitic draw that is normal, that is for the radio and power train management systems. That draw should be no more that 25 milliamps. I have seen the air pump relay, trunk light also cause a draw.