Need an ignition interlock device near Boston? Intoxalock is available at Emerson Auto Service Corp., a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Emerson Auto Services is located in South Boston. Their services range from new brakes to transmission repair all at reasonable prices. In 2009, Emerson Auto Services became one of Intoxalock's authorized ignition interlock installers.