COMBINE peaches, onions, peppers, cilantro, garlic, cumin, lemon peel and vinegar in large saucepan; set aside. Mix 1/4 cup of the sugar and the pectin crystals. Add to peach mixture; stir until well blended.

BRING to full rolling boil on high heat, stirring constantly. Stir in remaining 3-1/2 cups sugar. Return to full rolling boil and boil 1 min., stirring constantly. Remove from heat. Stir and skim foam for 5 min. to prevent fruit from floating to top.

POUR immediately into warm sterilized jars, filling to within 1/4 inch of rims. Seal while hot with sterilized two-piece lids with new centres. Let stand at room temperature until set.