From Life in the Lofthouse: http://life-in-the-lofthouse.com/crock-pot-maple-brown-sugar-ham/
Crock Pot Maple Brown Sugar Ham
7 or 8-pound spiral-cut ham (bone-in or boneless)
1 cup brown sugar
1/2 cup maple syrup
2 cups pineapple juice
Use a 6-7 quart crock pot. Unwrap ham from wrapper, and discard the flavor packet. Place ham inside crock pot, flat side down. Rub the brown sugar over all sides of the ham. Then pour on the maple syrup and pineapple juice. Cover and cook on low heat for 4-5 hours. Baste ham with juices an hour or so before serving. When cooking is done, carefully remove ham from crock pot and place on a cutting board. Let rest 15 minutes before carving.