I'm having trouble understanding how this instrument switch works.
Here is the schematic illustrating the three switch states:
How do I interpret these numbers?
If I were to guess, I'd say that the two relays are shown in the open position (NVG):
I don't have any confidence in my guess though.
Also, I don't understand why there are two junctions not connected to anything:
Hopefully this is standardized, and not specific to my wiring diagram.
I couldn't find the numbers referenced anywhere on the sheet.
Best Answer
The most likely conclusion is:
Since nothing is connected to 4, the 5-4 connection is not needed, but the designer probaby chose an off-the-shelf product.
Technically, you would call this a double-pole, triple-throw, top-off switch