Need an ignition interlock device near Chariton? Intoxalock is available at B&M Auto Repair, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.B & M Auto Repair of Chariton Iowa specializes in car repair services, auto service and repair, transmission repair, auto salvage, auto body repair, used cars and engines for sale. We even provide free manuals online. We have been installing Intoxalock ignition interlock devices for over two years.