Prick the casing of each sausage in a few places to prevent them from bursting.
Place the sausages in a pot, cover with water, and bring to a boil over medium-high heat. Reduce heat to medium; simmer 8 minutes.
Remove from pot and let cool.
Place toothpicks in a small bowl of water and soak 10 minutes to prevent burning on the grill.
Slice sausages halfway through on the long side. Stuff 3 prunes into the opening. Wrap a bacon slice around the sausage in a spiral and secure with two toothpicks. Repeat with all 6 sausages.
Preheat an outdoor grill for medium-high heat.
Place sausages onto preheated grill and cook, turning once, until desired doneness, or until bacon is browned.
