[Dean]

4 wire will not run brakes, you need a new harness for the brake unit.

What are you planning to pull? Isn't that a 4 cylinder?

Small trailers even up to a twin Jetski trailer do not have/need brakes if the truck has good brakes.

All the brake units are very reliable. They have to be from a liability perspective. I did a lot of research when I got mine, and the bottom line is unless your truck has an integrated towing package tied to the brake system, they are all basically the same. A pendulum and a gain control. Yes, there are snazzy electronic adaptive ones, but I'm not convinced they are worth the premium. (Even the cheap ones don't use pendulums any more by the way.)

Physics works pretty well. You don't need a fancy accelerometer and a LED display to apply brakes on a trailer.

Oh, and the number of wheels on the trailer does not mean how many brakes it has. even some triple axles only have 1 pair of brakes. Almost all dual axles only have 1 pair, so a 2/4 is fine.

I can look and see what is in the truck later.

I wouldn't pay over $100 and would tend toward $50-75.

Oh, and if you are thinking of a boat, they don't use electric brakes typically. They use hydraulic on the hitch. No controller / wiring required.