Welp, my decoder came today so I just said the heck with it and desoldered the JST connectors and just soldered right to the pads. Worked like a charm. Now I know for the B unit to get the NC version.
I recently purchased a WOWsound kit from TCS for one of my Proto 2000 FA units but I ordered the motherboard with the 2 pin JST connections rather than the bare solder pads. Could I just desolder the connectors or does anyone know the correct size of the JST connectors on this motherboard? I really don't want to pay 6 dollars for a premade harness from TCS when I get get 50 of them for the same price on Amazon.