Seed the bell peppers, cut them in half lengthwise, and then slice into 2 inch chunks. If the bell pepper is big you may need to cut each piece in half. Peel and chop the carrots into 1/4” circles.
Peel and slice the onions in half and into half circles.
In a nonstick skillet over medium heat, pour in ½-1 Tablespoons oil, and cook the carrots and onions in two batches. Season with ½ tsp of salt, cover and cook, stirring frequently for 8-10 min.
Do the same with the peppers, in three batches. The carrots and peppers should be tender but still crisp and not falling apart.
Meanwhile, in a large pot, about 8 quarts, pour in all the vegetable juice and bring to a boil. Turn off the heat.
Add each batch of vegetables as soon as they are done cooking. Add sugar, vinegar and garlic. Season with salt. (The amount will depend on how salty the vegetable juice is. If it’s low sodium juice, you will need to add more than to the regular juice.) I store the lecho in 1 quart glass canning jars.