Does the Ram have a factory brake controller? I have a 2015 Ram 1500 that has the built in trailer brake controls in the dash. The controls are to the right of the steering wheel towards the bottom of the center console, with a trailer tow option to select from the main menu on the dash. It works like a charm.
But… I have a Tekonsha Prodigy RF that I bought in 2015. I’m pretty sure it’s this one.
Here was my situation at the time: my truck died and I was at the mercy of friends and rental vehicles until I bought my new-to-me truck in 2016. I had a horse who had all sorts of medical appointments she needed to get to. After the rude surprise of no brake controller in a truck when I was told there would be one, I learned about the Tekonsha RF. It was a godsend! It is very easy to set up; the hardest part of the installation is drilling the screws into the metal on the tongue of the trailer. You have to screw it to the tongue, as there is really no way to temporarily mount it.
But I never had any problems with it. So long as you have the standard 7 flat RV blade plug that most all horse trailers use, it works. You plug the handheld remote into the cigarette lighter and sync it, and voila, your brakes work. I drove a lot of miles with it, including through some major cities at rush hour where I was getting cut off left and right. I was so grateful for it then!
I haven’t used it since 2016 when I bought my Ram with the in dash controls.
Caveat: when I was reading the reviews about it, some people with luxury SUVs had problems getting it to sync because their high tech computer systems interfere with the flow of power to the outlet. That’s not an issue for most of us horse people because we aren’t trying to tow horse trailers with a little Lexus SUV or anything.