on the Active load Circuit board - the assemply instructions (pg. 24/25) where you connect -reg to bA show 2 holes on bA and bB. My circuit board has 3 holes on these pads. I assume these are all connected and it doesn't matter which two I use?
Yes, I believe they are all shorted. You can use your ohm meter to check. I just used two next to each other and left the one closest to the center of the board open.