Battery Keeps Draining

My 94 LHS has a new battery but if I don't drive it for a week it is dead when I try to start it. I know the lights haven't been left on and I've even tried turning off the radio to be sure but it still happens. I'm out of work right now and we use my b/f's car on the weekends so the LHS often sits for a week at a time. Any clues what could be draining the battery? Thanx

you have a module that's not powering down, thus the drain on your battery. Have the car taken to a shop and have them measure for amp drawn on the battery w/ the engine off, key off. Normal amp draw should be less than 0.040 milliamps.

Just an off guess, do you stick things above the visor and between the Vanity mirror covers? If the Vanity mirror covers are open just enough the lights will come on and you will not notice it. If not the case then get it checked like posted above.