Re: Swapping trailer brakes
The replacement kit is the same one that you would use if installing brakes on a trailer that didn't have brakes at all. Depending on the hubs you have, they may or may not be suitable for electric brakes. If they don't have the flat machined surface where the magnet rides, they can't be used for electric brakes. As a minimum, new backing plates (the actual brake assembly) is required which replaces the original.