This is from the Southern Living site, looks as though it could be what you are looking for.

CHILLED VEGETABLE SALAD

1 cup sugar
3/4 cup cider vinegar
1/2 cup vegetable oil
1 medium-size green bell pepper, chopped
1 medium onion, chopped
3 celery ribs, sliced
1 (7-ounce) jar diced pimiento, undrained
1 (15 1/4-ounce) can small sweet green peas, drained
1 (14 1/2-ounce) can French-cut green beans, drained
1 (11-ounce) can white shoepeg corn, drained
1/2 teaspoon salt
1/4 teaspoon pepperBRING first 3 ingredients to a boil in small saucepan over medium heat; cook, stirring often, 5 minutes or until sugar dissolves. Remove dressing from heat, and cool 30 minutes.
STIR together chopped bell pepper and next 8 ingredients in a large bowl; gently stir in dressing. Cover and chill salad for 8 hours. Serve with a slotted spoon. Yield: 8 cups.
Prep: 20 min., Cool: 30 min., Chill: 8 hrs.