Replica of Lucas DC40 panel inspection lamp. To suit models fitted with petrol tank instrument panel. Illuminates the speedometer, oil pressure gauge and Ammeter. As fitted to many models including 1936-50 AJS, Matchless, Ariel, BSA, and Triumph Speed Twins. Two position switch marked as ‘On’ and ‘Off’ Switch base measures 5cm diameter. Manufactured on new exclusive 2013 Tooling!