1995 E320 wagon; battery drains over night. (If battery is disconnected overnight, battery is strong next morning.) I disconnected the negative battery terminal, and put a test light in series. Light is bright, indicating significant current flow. I pulled every fuse in the engine room fuse box, just ahead of driver. The test light never went out! Is there another fuse box?

The car has no aftermarket gizmos hot wired in.

Side note:
The ASR light come on with the second start-up of the day, but does not seem to have any effect.
When the battery cable is connected/disconnected/ connected, there is a click click click sound from what I assume is the ABS pump, in the front/driver's side of the engine room (many steel pipes going into this unit). If I pull the two relays out of this unit, the click stops of course, but the test light still glows brightly, indicating current.


The test light I refer to is between the batt neg terminal and the disconnected neg batt cable.
Thanks for your thoughts.