For sauce, in medium skillet cook onion in oil over medium heat about 4 minutes until onion is tender. Stir in catsup, orange juice, brown sugar, chili powder, and ginger. Continue cooking over medium heat for about 5 minutes or until thickened slightly. Trim fat from meat. Cut the ribs into serving-size pieces.
Arrange preheated coals around a drip pan in a covered grill. Test for medium heat above pan. Place ribs on grill over drip pan. Cover and grill for 1-1/4 to 1-1/2 hours or until ribs are tender and no pink remains, brushing with sauce the last 10 minutes of grilling. Makes 6 servings.