I don't know, but it's unlikely IMHO if as mentioned the switches are mounted directly to the PCB behind rather than being on loom connectors. If they had different LHD/RHD versions then I wouldn't expect to see the rear wash/wipe switch far over to the left for RHD, as it is.
I suspect the blank switch position on mine is for the alarm btw (tow away, and/or internal sensors). We didn't spec. the alarm (optional).
