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Check the earth straps and what disconnecting and reconnecting the alternator does to the readings. That way you can see if anything changes.
Main fuseboard trick can give you an idea what area and then go in to each sub system. Traced issues on an Alfa 159 that had central locking motor that was not going to the right closed position. That took ages to find as the sub system kept cycling and not going to the off position.
lynx
BrickMan
Interesting, guess my low battery is maybe just from this drain then.
So many fuses, also canbus type modules that stay powered up for ages, suspect it might be the recon alternator diode pack is maybe not 100% as it seems to be pretty constant. Turbo is coming out tomorrow and alt is right under it (absolute arse to get to from underneath without just removing it) so thats my time to check it.
I see a lot of ford focus (2005-2010 shape) with the ODO still lit up at night, some mad canbus issue probably causing that too!