A quick recap of all the components in a fibre optic lighting system

• The light source is where electricity is turned into light.
• The harness is the fibre optic cable which transports the light.
• The end fitting is where the light is output.

The image above shows an example fibre optic lighting installation.

• The light source is located in a convenient area in the ceiling/attic space. After installation, access is only required periodically to change the lamp.
• The fibre optic harness runs from the lightsource to the area where the end fittings are to be installed.
• The end fittings, in this case downlights, are installed in the ceiling of the room to be illuminated.
• Light is output into the room below.