Need an ignition interlock device near Murfreesboro? Intoxalock is available at TFG AUTOMOTIVE, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.TFG Automotive, "The Ford Guy", provides services including oil changes, tune-ups, transmission repair, car and truck brakes, and air-conditioning. We repair and specialize in Ford, Lincoln and Mercury. TFG has been an authorized ignition interlock installer for Intoxalock since 2010.