Need an ignition interlock device near Williamsville? Intoxalock is available at Custom Radio, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Custom Radio has been the trusted mobile superstore in the Williamsville area for over 33 years. They are expertsí at all mobile electronic installation. Since 2015 the Custom Radio team has been installing the Intoxalock ignition interlock device.