658880[/URL]]Because I originally towed with my 2004 Nissan Frontier, I did have to add a tail
light converter to convert the truck's wiring to properly operate the trailer's
lights, (the tail
light wiring converters are available off the rack at NAPA, and probably at most auto parts places,) but after that, I didn't have to add any additional wiring converter inside the trailer when I wired up the Stow-Away box's wiring to the 4-Pin connector I installed to tie into the rear wire bundle along the back wall of the trailer under the toe board. (See my wiring guide I posted a few posts back for the color code.)
Now, my wife just bought a new 2016 Chevy Silverado Crew Cab 4X4 with the "trailer tow package," and I didn't have to add any wiring converter to her truck's tail
light wiring. Just plugged the trailer's plug into the 7-Pin Bargman on her truck and walked around to do a light check, and everything worked fine without adding anything extra.
Since I don't know what your tow vehicle is, I can only say that some vehicles may need a converter (mounted under the truck) and some don't. I guess if the trailer
lights are working fine right now, then you won't need to add a converter.