Need an ignition interlock device near Harlingen? Intoxalock is available at Xtreme Auto Sound, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Street Sound Customs specializes in making vehicles unique. They offer services in window tint, XM Radio, car security and audio accessory installation. Street Sound is located in Harlingen and they have been an approved ignition interlock installer for Intoxalock since 2008.