Quoted from techsponge:Does it say on the board or another bigger board which one it is? How do I tell?
Small boards are all the same, just pointing different directions on their base. You can pull them off and stick back on a different direction if needed.
The big boards all have on them what they are. Also you can look at the data harness layout on page C-54 in the manual to figure out which big board is which.
If you don't have a manual, you can download it from jerseyjackpinball.com - Support - Downloads - Wizard Of Oz.
The same website, you can go to Store - Parts - Wizard Of Oz, and look through the boards to find the big one shaped like yours.
LTG : )