PC board for On30 Shay and Climax

[Peter Webster]

Can someone direct me to a circuit diagram for the pc board circuit used in the On30 Shay or Climax.
I noticed 2 unused pads on the board. What are these used for?
Thanking anyone who can help.
Peter Webster

[regbarron@icloud.com]

The Shay pad has unused contacts for the back up light included in the Climax.  There are also a couple of extra components on the Climax board for the back up light.

Reg Barron