Courtesy Light Problem
 

I have a 2007 Accord with a dimmer problem-With the key in the ignition,but not on,when I close the door,the light dims as normal and finally goes out.If I remove the key,the light dims to a certain level then stops dimming leaving the lights to glow slightly.If the car is left for a couple of weeks this problem will eventually drain the battery.While these lights are operated by a rheostat,I cannot understand why they operate perfectly with key in the ignition but not with key removed.Any kind soul have a solution?