HI!
Thanks for the reply...
The codes themselves were unique to each aircraft. The codes were not for the placement of the instruments, but rather, so the ground crew could ID each electrical connection for the instrument that was installed. This was so if the items were removed or taken apart, they could ID the correct plug and connection to re-attach.
So all codes should have remained standard on all Fw190 panels. There was no reason to change them, unless there was a change in the electrical schematics and electrical system.
I just saw another Fw190 D panel, that had late 1945 codes (there was a change across the board on all aircraft in 1945 or so):
1L2 - Horizon
1L11 - Compass
The same Fw190 panel, having the same instruments, "should" have all the same codes...but they don't. There is some sort of change in 1944 that caused this...just don't know what it was.
Mike