1. If using bamboo skewers, soak skewers in cold water at least 30 minutes to prevent burning. Prepare outdoor grill for covered direct heat grilling on medium.
2. In small bowl, combine oil, garlic, oregano, 1/8 tsp salt, 1/8 tsp pepper. Let stand while you cut onions, peppers, and sausages into 1 inch chunks.
3. Thread peppers, 2 at a time and alternating with onion and sausage, onto skewers. Brush skewers with oil mixture.
4. Place on hot grill grate; cover and cook 10-12 minutes or until browned, turning occasionally.