Don't know anything about the Champion Winch, but you should be able to wire a second set the same way the first set is wired.
I have both an in cab switch and a front bumper winch control socket. Here is the thread for my project.
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=16&t=60104&hilit=+winch
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2005 CRD "
Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.