In article ,
Bob Minchin wrote:
If a diode in the alternator rectifier fails, the alternator may still
'work' but draw current from the battery when the engine is turned off.

I've also had a leakage problem when water had got into the fusebox of
my sons mk11 focus. Even though it had all dried out there was corrosion
and growth between the metal busbars under the fuses. enough to give a
30mA continuous leak in addition to alarms, radio back up etc etc as
found in a modern car.

Think some of the earlier Escorts also had a fusebox in a silly position.
Or just made so that is was prone to faults through damp.

--
*What boots up must come down *

Dave Plowman London SW
To e-mail, change noise into sound.