Push-On Connector - Connection Points

Structure of a LWL joint: 

1. Optical contact, black
2. Optical contact, grey
3. Joint connector side
4. Joint socket side
5. Socket side LWL module
6. Optical contact, grey
7. Optical contact, black
8. Springs
9. Spring cap
   Fig 1: Identifying Structure Of LWL Joint

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.