Add all marinade ingredients to a gallon size zip-to-lock bag and massage bag briefly to combine.
Add salmon fillets and let marinate at least 1 hour, 2 to 3 hours is better.
Preheat grill to medium high heat.
Grill salmon 5-7 minutes per side until cooked all the way through., brushing with the marinade a few times.
Notes
Don't overdo the liquid smoke, just a few drops will impart the mesquite flavoring while any more will overpower the other ingredients. When in doubt opt for less!