Agreed, but it's nice and warm in the auto parts stores so spend a little time familiarizing yourself with the hardware and wiring harnesses.
Not many around here, but I'll check out what I can!
Aaahaa, the next logical question, trailer brakes. (There is actually one more, weight transfer hitches, but I doubt you'll need to know about them for anything your RAV4 would tow.)
First, last I knew in the manual, Toyota wanted brakes on any trailer over 600 lbs. I think that's ridiculous for a 3000+ lb RAV4, and is probably a general statement the legal dept thru in. I wonder if it's in the
Tundra and Sequoia manuals too.
I haven't looked up the legal requirements for trailer brakes in most US states or CA provinces but its probably around 3000 lbs. In a way that's pretty antiquated because it should depend on the weight of the tow vehicle and the regulations were probably set back when every tow vehicle was 2 tons.
I'm most familiar with utility, car, travel (caravan), and enclosed cargo trailers, all of which use electric brakes if they need them. I understand boat trailers have hydraulic surge brakes built into the trailer tongue so no control or actuation is needed from the tow vehicle.
The aftermarket harnesses power trailer lights only, have converter for the separate the brake & signal lights on the RAV4 (and most foreign cars) to the combo brake/signal lights on the trailer, and a 4-flat connector. I know there's post on it but my understanding is that the OEM harness also has a power wire that runs to the dash, but doesn't have the extra wire needed for the electric brake controller. If it doesn't you'd need to run that wire from the hitch to the dash - and you would too with an aftermarket harness. In either case you need to supply an aftermarket brake controller since Toyota doesn't and upgrade the 4-flat connector to the larger 7-round one the trailer will have. And with 2 more wires left after the 5th one is used for the brakes you have to decide whether you want live power and backup lights connected.
So, lots more options & decisions.