If you are wanting to replace the entire surge brake actuator on your Four Winns Horizon 190 boat trailer then I have exactly what you will need. I recommend using the Dexter Disc Brake Actuator part # 099-175-20. This actuator works with 2" hitch balls. It has a 7,500 lb weight capacity, fits a 3" wide channel, and includes a electric lockout feature so you will not have any issues backing the trailer up. The actuator also offers a completely bolt-on installation.
The Titan brake actuators... view full answer...
Since you already have a brake controller wired up in your 2002 Four Winds 5000 the Prodigy P3 part # 90195 would easily install in place of it by wiring in it's place.
The P3 is great because it can sense the amount of deceleration and will apply the appropriate amount of braking power to the trailer as needed. view full answer...