Engine Will Not Start With Switch At "Ign", But Starts On "Emg"; Engine Runs With Switch At "Ign", But Not On "Emg"; Rough Running And Misfiring With Switch At "Ign"; Wiring Diagram For Lucas Rm13 Lighting And Ignition (T20 And T20C Machines) - Triumph 1964 Tiger Cub T15 Workshop Manual