Cook bacon until crisp. Drain on paper towels; crumble. Sort bean blend. Rinse well; drain.
In 3 1/2- to 4-quart slow cooker, combine cooked bacon, bean blend and all remaining ingredients except tomatoes and sugar; mix well.
Cover; cook on low setting for 10 to 12 hours or until beans are tender.
Add tomatoes and sugar; mix well. Cover; cook on low setting for an additional 30 minutes or until thoroughly heated.