Honda Black Rear Brake Cable with Brake Light Switch suitable for use with Z50AInline switch note: If you test this cable switch manually with a multimeter while it is not fitted to the bike, it may appear non functional. We have received several returns in error for this exact reason. The cables require substantial tension to trigger the switch, so it must be tested or used while properly installed on the bike. It is also very difficult to hold a multimeter and test these cables single handedly.