I suppose it depends on where you live. Here in Florida, surge brakes are common as so many of us have boats. Boat trailers don't typically have electric brakes due to being dunked in water all the time.
Not quite true. Most boat trailers have surge brakes and use a 5 pin connector. Of course there are converter plugs for 4 to 5 pin and 7 to 5 pin, with the 7 to 5 pin better since it has a reverse circuit.
If the Curt harness works without having the power wire connected to the battery or some ither positive lead such as an Aux wire, then you still have it setup wrong.
You can't do that with the OP's hitch in question. Like the Ford, the threaded nuts are welded on to the back side so you have to remove the bumper to insert the bolts.
The Curt (and Rough Country) hitches do not have welded nuts so you can inset the bolts fromt he backside and not have to...
I installed this one from Curt. https://www.curtmfg.com/part/13493
I bought it from NAPA auto parts, but Amazon and lots of other places carry it. I think I ended up paying around $90 for it...
I looked at those since they copy the FORD OEM design, but they require you to remove the rear bumper to install. I went with a Curt hitch that doesn't require removing the bumper, took literally 5 minutes to install. I also like the idea of using a name brand hitch just to be certain its been...