Oh boy am I pleased to have found this site, it's those pull cord switches in the bathroom again!. Mine stopped working so the light was on all the time. Went and bought another thinking wiring I could copy wiring over to new pull cord. Wrong! Old one 2way common has red to L1 and black to L2. New has L1 and L2 and Com. Do I put red to L2 and black to com? (earth connected to it's own block in the upper part of the switch)