55.2-59 Battery draining

[leegreen]

It sounds like you already fixed the large battery goes dead overnight problem.

When the MM gets confusing, you could put your new test light between battery and negative then disconnect stuff one change at a time until the light goes out.
Leave that last thing disconnected, it is one of the problems, maybe the only problem.
Next double check to see if there is a second problem: reconnect everything else to see if one of them makes the light come back on