I am not sure exactly what a tow bar is, but if you mean a hitch receiver, any trailer hitch place can order and install one for about $125 US. I got mine in Atlanta GA area the next day.
I would never pull anything bigger than a kayak carrier, I use mine for the bike rack.
I did not get a tail light connection. That is a little complicated and requires a separate kit that starts under the hood.
I cannot imagine trying to pull, or stop, a camper of any size. Hope I am not in front of someone who tries.