I also have a 2013 Focus but it's a 5-speed. Didn't like the procedure for towing an automatic so I can't help there.
However, I've installed a completely separate lighting system that is powered by the MH. A power line also runs from the MH to a Toad-Charge unit because I use a power line from the Focus battery to power my Even-Brake.
As for the breakaway switch, I made an adaptor that will use the 2 rods that a receptacle is usually installed to. The MH umbilical cord will run back and into the engine compartment where it will mates with a 5-wire plug.
I don't want to cut away more of the grill than I have to.
I'm having the base plate installed Tuesday and when I have it all together I'll send you a few pics (if you send your e-mail address to me at email@example.com).
If all is as I expect on the Focus, the steering column doesn't lock so I won't have to leave a key in the ignition.