The question of how to cook Italian sausages on the grill is one of both safety and flavour. Italian sausages have a relative high fat content and any process involving both high temperatures and fat should be approached with caution.
Grilling Italian sausage
The other concern is ensuring that your sausages are cooked thoroughly as they are a pork product and as such carry with them the risk of food poisoning. Be particularly wary of a sausage that is overcooked on the outside and remains raw or bloody on the inside.
When it comes to flavour, the way you cook your italian sausages under the grill all depends on the dish you are creating. Perhaps you intend to make a delicious and simple Italian sausage sandwich. Light your grill to a medium heat and place the sausages beneath it at a distance of around 12cm. Overall cooking time should be around 10 minutes depending on the diameter of your sausages. Turn them every 2 minutes to ensure an even cook. You can find a step-by-step guide here:
http://www.wikihow.com/Grill-Sausage
Once cooked, remove the sausages from the grill and tuck in!