I have electric brakes on my dolly that tows a KIA Sportage. I know it bigger than a mini. I would not tow without,there are more and more times you will need a fast stop and with out the added braking it will take you longer to stop. I like the electric brake as it add no extra weight to the dolly, which make the dolly easier to move. With the brake controller up with driver you can make sure its working.
Not knowing but I would bet the MH has wiring for the brakes. If your plug is 7 pin I know for sure. I think even 4 pins handle electric brakes. There should be a wire under the dash for the brake controller.
