Grease grill grates and set grill to medium high. Slice kielbasa into 1/2 inch thick rounds.
Cut onion into chunks
To a skewer add 1 piece of kielbasa, 1 raw shrimp and one chunk of onion.
Brush all over with 1/4 cup thai sweet chili sauce. Grill skewers 2-3 min per side until shrimp are cooked.
Transfer to platter and brush with another 1/4 cup of thai sweet chili sauce. Serve with lime wedges.