Fog lights should be in the center of the vehicle next to each other
The ADR (NSW) that I read some years ago dealt with vehicles and specificly roof mounted lights. I recall it was specific and classed them spot lights again from memory they had to be wired independantly of other lights.
I also know a few people who were pulled over in Bathurst for having roof mounted lights and a couple of them were fined because the lights breached regulations. Anyhow its worth checking
