Genuine Lucas 3 Position Toggle Switch 57SA 31788 Norton BSA Triumph BC40181

Genuine Lucas Classic 3 Position Toggle Switch 57SA 31788.
As fitted to numerous Norton, BSA and Triumph models including :-
Triumph 350,500cc Unit Twins (1968-74)
Triumph 650cc Unit Twins (1968-73)
Triumph T140,TR7 (1973-78)
Triumph T150 (1973-)
BSA A50,A65 Twins (1968-70)
Norton Commando (1971-75)

OEM: LU31788, 57SA, LU35710, 99-0563