It's likely you have a 4,400 lb axle which you can confirm by reading the sticker on the axle tag in the center of the beam. If that's the case then you will want to use the Dexter Nev-R-Adjust Electric Trailer Brake Kit part # K23-478-479. These are bolt-on assemblies which feature a simple four bolt pattern with two wire installation. They are standard 10" brakes. view full answer...
Thank you for the photo, and it is a good idea to verify what you have, which I can confirm for you is a 2 inch trailer hitch receiver.
For a hitch lock, I highly recommend going with a stainless steel lock as it will prevent rust and corrosion, and for the best option you will want a Curt lock:
- Curt Trailer Hitch Receiver Lock # C23519
This lock comes with two keys so you'll have a spare on hand just in case one of them gets misplaced, and it also has a rubber cover over the lock... view full answer...