I just did a search when I saw your inquiry; I don't gave a Focus. ETrailer is a great resource for info, hard to find items, etc. I did, however, just start flat towing and we're currently on our first trip with the new Legacy. With our old RV, I pulled a car hauler with a 2010 Tacoma double cab on several trips. Had a really nice Featherlite car hauler. It was OK, but always had to find extra long pull thru spots. Sold that and got a 2014 Wrangler Unlimited. I went with the Blue Ox base plate and a Blue Ox Adventa 10,000 lb tow bar. More than I needed, but liked the features. For braking, I got the Invisibrake. Some friends gave one they swore by and after this first trip I can understand why. It's permanently installed (mine's under the front seat). It triggers when the MH brake lights come on. Really works great. For lights, I didn't use the kit that came with the Blue Ox accessory kit (bulbs, sockets, diodes, wire, etc). That kit required drilling a new hole into the tail light and installing the new bulb and socket. A little pricey (like $195), but I went with the Blue Ox wiring harness. You just unplug the wiring harness from each taillight and plug the new harness in between. Instead of diodes, there is a small computer module that gets installed somewhere out of the way, then the harness goes to the front of the vehicle. I also got the Blue Ox KarGard II to protect the Jeep while towing. I got much better pricing through Amazon and free shipping with Prime. A mechanic buddy of mine did the whole install in about 6 hours for about 1/3 of what Camping World wanted (and I can trust him!). Good luck - yell if other questions.
2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
Gigi, Poppy and Sadie Lady...On the road, but not full time!