Popped a grommet through under the fake tail light and mounted a relay in the rear quarter panel, switching circuit is off the factory reverse light. power is fed from the anderson plug to the relay. I have not put a separate switch in the cab at this stage, so they come on with the factory reverse light, however I may do so in the future.
I bought the light bars off sun-yee trading on fleabay as they were cheap at $50 for the pair, delivered, they are rated as 30 watts a piece, should be heaps for my needs. I figured cheap was good for this application as they are likely to get damaged at some stage in the future when I back into something.
To mount I drilled up from under the bumper and into the steel subframe of the standard rear bar, I shimmed out the gap between the plastic bumper shell and the steel frame with a few washers.