[mcbrew]

I know you've already bought the controller and wiring, but just for general knowledge, there is a Prodigy controller that is wireless. There is a box that mounts to the trailer, and then a controller that just plugs into a 12v outlet in the car. It is proportional, and can be manually actuated like the other Prodigy controllers. The main downside is cost... I is $299. However, it may be cheaper than buying a good controller AND having it installed. Plus, it is easy to move the controller from one tow vehicle to another.

 

[mcbrew]

Every state is different. In Maryland, a trailer over 3,000 pounds needs brakes. However, ANY trailer (even under 3,000 pounds) that has brakes MUST have a breakaway device. Not that trailer laws are enforced all that carefully, though.

My new trailer doesn't have brakes, but it does have the backing flanges on the axle. I'm considering adding brakes to it. I'll probably do it once I find a nice way to install a P2 or P3 controller.