On the 2010 378TS the water pump is located on the passenger side, second storage bay from the back. Ditto above, it's behind the black plastice cover. Our black cover is not sealed with silicone; it has srews on edges and corner that you need to remove to gain access. See 15 amp inline fuse in secound pic.
Pete and Patty
2010 Georgetown 378TS; 2012 4dr Jeep Rubicon
1 Yellow Lab (hers);1 Little Bitty dog (mine)