Driving Light Legality

When I was full time in the opal fields and driving between Mintabie & Broken Hill at one stage I had my big Hella Bullight with a 150 watt sealed beam 6" light each side of it and it was perfect for night time driving , I could spot the roos on the side of the road from a long way back . I had my alterator delta'd to give me more amps , so I never had any problems with losing battery power with the amount of lights I had .

Then I changed my headlights to the brighter xenon blue lights and found that I didn't need the 150 watt lights , which was good as the sealed beam units were starting to cost a fortune to replace , but I still kept my big Hella Bullight in the middle , which I used to take off in the daylight to let airflow through on my HJ 75 to keep the temps down in the summer .

Now it has come to my notice that even before when I was running 3 lights plus my 2 headlights I may have been running illegal , as I have also been told that if you have a driving light , they have to be in pairs , so even with only the 1 bullight in the centre I may not be actually legal . I was going to go to the RTA here in Broken Hill and ask them , but thought of checking with you mob first :)

What are your thoughts on this ?