Preheat your grill to medium-high heat.
In a large bowl, combine soy sauce, brown sugar, ketchup and garlic powder. Mix until combined.
Add chicken wings to the bowl and toss to coat in the marinade. Let sit for 10 minutes or longer if desired.
Place chicken wings on the preheated grill and cook for about 10 minutes per side or until cooked through and golden brown.
Baste with additional marinade while cooking if desired and serve hot!.
