Need an ignition interlock device near Antioch? Intoxalock is available at Brentwood Car Audio, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Brentwood Car Audio specializes in audio and security upgrading. They can fit your vehicle with a Bluetooth car kit, install a back-up camera and much more. Brentwood Car Audio became an authorized Intoxalock installer in 2015.