EDITED : Oops FWIW, the clutch interlock switch is a Normally Closed Contact , held open (NCHO.) when the clutch lever is released (Not operated). When the lever is operated the NCHO contact recloses! Item 8 here: http://www.fileden.com/files/2008/1/1/1673654/My%20Documents/Chapter%207%20pgs%2023-27...