G'day,
Bought this fog lamp switch from the local auto leccie, and it went neatly into the cut out.
I guess it is a standard DIN si2e?
I also don't know for sure which of the others are a neat fit - but if you are looking, hope this helps. The si2es are listed under more info, and the one I bought states opening si2e 34.5mm x 20mm.
Check out the Narva website under rocker switches.
The Narva Rocker fog lamp switch listed under the standard duty section slotted straight into one of the lower row of holes in the centre console of my Mav. http://www.narva.com.au/products/browse/standard
momentary on or momentary off. these are also listed on the Narva site under Rocker Switches heavy duty, they are bigger, opening si2e 37 x21. http://www.narva.com.au/products/browse/heavy-duty-3
No doubt there are others.