Rod Stewart posted:...For grj's new board, I am thinking that since the center rail is the one carrying the DCS signal, the center rail pickups should be connected to pin 2 of the AC input (ie the round hole) since this connector runs through the 22 uH choke. Does that make sense?
Doesn't matter. Choke performs same function either way.
Consider that the board works with 2-rail where DCS "hot" could be either rail depending on car orientation.