Your multimeter reads amps, (m=milli and u=micro) however, in order to read higher current readings, some multimeters have a separate jack with "10A". Also, polarity is very important when measuring amps. Many meters also have a fuse for protection when using in amperage mode, it may be blown if you exceeded the rating of your meter.

If it takes a week, I'm thinking that your battery may be going flat. The items you listed, including the radio which probably draws about 20mA for the memory, shouldn't draw the battery down that much. Also the radio memory draw does have a slight pulsation to it, I noticed this when working on mine.

Once you start it, what kind of voltage readings are you getting at the battery?

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )