Ok, so on an old car you:
1) Put a multimeter set to milliamps on the battery (r-to-r, b-to-b).
2) If its drawing a bit of current pull fuses one at a time til the current drops off.
Right?
i should know this really being an electrician but i think an ammeter needs to be connected in series with the + of the battery to read the current going through.
(http://i150.photobucket.com/albums/s81/robdav99/amps.png)
yes in series.... youll blow it up if you put it accross the terminals :o
to measure amps you go in series
to measure volts you go in parallel
(fsh.... why won;t firefox spell checker work!!!)
how old a car?
Itll be the radio or alarm if it has one.