Mix together shrimp, garlic, brown sugar and chilli sauce. Cover and refridgerate at least 2-4 hours, stiring it a few times. Cut the bacon in half side-ways and fry the half slices of bacon until partially cooked, drain. Wrap each shrimp in bacon and secure with a tooth pick. Set oven on broil and broil with tops 2-3 inches from heat until bacon is crispy. Watch closely as it will be a short time.