That Crazy Squirrel
I'm too LAZY to Choose a ... oh **** it...
Put the meter inline and observe the draw.
One by one, remove the fuses that are on the "battery" side of things, not the ignition switched fuses.
Sine you know have diagrams, you can see which devices, or which relays are on the circuit that is suspect. If the dash is an issue as mentioned, the draw will disappear when you yank the fuse.
Just a quick, easy process of elimination to go through.
I would not discount the ignition switched circuits, for the simple reason that he was getting B+ at the field connection with the ignition off.

