The fiber optics can be fitted on the control panels where required. I like to fit them on the central section which divides the two seats. To fit the fibers, you need to carefully drill 1mm holes where you would like to fit each strand. The fiber we use is the most supple, but bend the fiber slowly to reduce the risk of snapping it.
Run each strand through the fitting hole so that it is proud, and then place a small blob of glue on the unseen section of the panel through which it runs.
Let the glue dry thoroughly.
When the glue has dried, use snips or ideally flush cutters to cut off the excess fiber on the seen section protruding through the panel for a neat fit.
There's more advice on using fiber optics in the hints n tips section of the site if needed.