Heat your grill to medium heat, between 350F and 400F.
Combine all of the ingredients except the salmon in a small bowl and whisk together.
Cover a baking sheet with foil, and place your fillet of fish on the foil.
Pour the sauce mixture over the fish and coat evenly.
Place the baking sheet directly on to the grill and close the lid.
Cook until done, about 20 - 30 minutes depending on the thickness. Your fish will be done when it flakes from sticking a fork into the meat and twisting slightly.
Notes
I used a baking sheet on the grill mainly for easy clean up and to prevent flair ups from the sauce dripping onto the grill. Feel free to place your fish on a well oiled grill if you prefer. Your fish will likely cook a bit faster that way as well.