19-12-2018, 11:21 AM
As Timothy says, a mag-type switch panel should have M and D on the face. I beiieve Bill's panel is an interim unit between the normal mag-type and the coil type with ignition light, presumably fitted to the late coil-ignition R-Type saloons late 1928? A circuit test will establish whether the ignition switch is earthed in the on position for a magneto, or live for a coil.