In a small bowl, combine the first seven ingredients. Stir in crab. Place 1 teaspoon crab mixture off-center on each wonton wrapper. Fold the point of the wrapper nearest the filling over the top of filling and gently tuck under filling. Gently roll toward center to within 1 in. from the opposite point. Moisten the right point; fold over the left point, pressing ends together to seal. Moisten the overlapping points.
In an electric skillet, heat 1 in. of oil to 375°. Fry wontons in batches for 1-2 minutes on each side or until golden brown. Drain on paper towels. Serve warm with sweet-and-sour sauce.