Tonight I detached the negative battery cable and attached a test light in series to see if there was excessive drain ( I just replaced the battery as it would not hold a charge , got six years out of it ). Well , the test light barely glowed and became much brighter when the overhead courtesy light was turned on. This is , I believe , ideal. What I was surprised about and maybe someone can clarify for me ,was the very faint glow was not continuous but cyclical. Specifically two long glows followed by a short one , repeating in that fashion. The only thing that I believe would present a drain when the car is not on are the clock in the instrument cluster and the clock in the aftermarket radio..someone care to comment ?