Mix marinade ingredients together in a container larger enough to accommodate all your chicken and place the thighs in. Cover and marinate for at least 6 hours, preferably overnight. Remove from fridge an hour before grilling (ideally).
Preheat grill to high heat.
Place thighs smooth side down and close lid. Cook for 2 - 3 minutes to develop grill lines.
Open lid and flip pieces. Closing the lid back up, cook the chicken for an additional 2 - 3 minutes then turn heat to low to cook the rest of the way, about 5 minutes.
Remove from grill, and let rest for about five minutes before serving.