For cars that the manufacturers didn't create a bracket for, what do you use to create a bracket? Is there a way to re-form a bracket that the lightbar came with or do you just create a new one from scratch?
try a universal mount, they work for almost anything. you can always tweak the mount using a bending break but to get what i think you asking for ( IE charger brackets for mounting to a charger) if you cant find them from the bar manufacturer and don't want the universal ones you'll need to make your own, OR if price is no object find your local Welding/ sheet metal shop and ask them to fab up a set.