Triumph BSA Norton Genuine Lucas 12-0-12 Ammeter PN# 36403 G 99-1044

The ammeter is useful to the rider as it displays the operation of the charging system while the motorcycle is being operated. This Lucas ammeter features a black face with a 12-0-12 scale and is suitable for British motorcycles equipped with alternators and 12 volt electrical systems from 1968 through 1970. This genuine Lucas 2AR reproduction ammeter measures 1-3/4″ across the chrome bezel and has a 1-5/8″ diameter across the body. Specified for 12 volt alternator-equipped models with RM19 and RM21 stators through 1970. The ammeter is connected between the rectifier and the battery on models with alternator charging systems. The scale shows current readings as engine speeds and electrical loads vary. When the needle is on the ” ” side of the center of the scale, the charging system is sending direct current to the battery. Ammeters are mounted in the aperture on top of the headlamp shell, so the glass reflector and rim assembly must be removed to access the ammeter. A thin rubber o-ring is useful for sealing around the base of the bezel. The bezel has four thin tabs that are bent down to fit into the shell from the outside, then bent upwards inside the shell to retain the ammeter. For installation tips, read our tech blog: Fitting the Lucas 36403 Ammeter to Your Classic Triumph Motorcycle Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us. The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.