Hit a snag. The one coil coupler was fine. However the one shown above had the the solder point break off sometime in the past. You can see the loose copper that was previously on the solder point. The coupler fires if I apply track power to this thread with the frame grounded. Do you think I could just solder onto the top of the copper wire spool that's visible? Or is this coupler a goner? It doesn't look like this is an easy part to get off either.
