AVC - is this the right way to connect?

[myleftear]

Good morning to all!

While I'm wading through my various other things, I found one that's bugging me:
the build of a AVC, with autoformers (23 positions) I got from a serious guy in germany.
He's not very responsive though, thus I'm asking for confirmation here:

The correct connection of the Autoformer to the switch seems scary easy. So, according to the schematic from a different place, is it

• first wire to input hot,
• 2nd - 23rd wires to the positions 2 - 23,
• switch output to next stage/output
• in/out GND tied to AVC #24

While writing this, it seems to make sense, like being pretty close to the schematic.
Right?

 

[Speedskater]

Which terminal are those resistance reading ~ from?

 

[myleftear]

From the first wire to the 2nd., 3rd. and so forth:
The wires are "coming out" in groups of 3: Yellow, Red, Black, this explains the 1R, 1Y, 2B, 2R, etc., the number is the measured resistance between "it" and #1 (Green) ...