Np300 rear bumper replacement help needed

Hi guys, hoping someone can help, I am replacing the rear bumper on my np300 and the instructions that came are useless as it's just a parts list, I am unsure which way round the new brackets go and if they go on the outside of the rear bars or inside, I am assuming outside but I am struggling, and with it being the bank holiday I wanted to get it done, any help is appreciated.