Missing manual info / addition request for artificial horizon

[Buzzles]

As this has puzzled me since the 109 was released in early access into DCS, I've been digging for info on just what the hell is the vibrating round object in the cockpit down by the pilots left knee, forward of the throttle and directly under the undercarrage buttons was.

All I knew was that its vibrating is controlled by the V-100 breaker (ignition, landing gear etc)

 

Turns out it's the transformer for the artifical horizon ("Umformer für Elt-Wendelhorizont" according to: reference, see item #17)

 

So, bug/missing feature request is that it's missing from the list of items the V-100 breaker controls on pages 56 and 105, and the manual is also missing a little number and line on either page 69 or 71 pointing to it and saying exactly what it is.