If you put electric brakes on your trailer, the athorities assume your going to carry more, so your GVM (gross vehicle mass)of 750kg max weight includinging load at the moment, increases to 1.02t and so does the cost of rego AND it means a yearly inspection, don't know if yearly inspection happen in QLD for trailers over 750kg BRAKED.
Brakes mean it is able to carry more, they don't care if your not going too, so going on the vin, it means your trailer is designed for a max GVM of 1.02t if fitted with brakes.
Baz.