?? yes, since it's electric, it only works with electric brakes. Not e.g. mechanical / hydraulic "surge" brakes, etc. And as noted above, some have reported issues with Kodiak disk brakes. If you have disk brakes, there is some sort of a workaround for this; do some searching. My GMC Sierra 2500 brake controller works great with my (drum, electric) brakes. The really nice thing about it is that the controller reads brake master cylinder pressure, which translates to it reading actual brake pedal pressure, so it "knows" what you are wanting to do, rather than reading deceleration and "knowing" what you actually ARE doing.