Bermuda Breeze,
Are you talking about the switch label backlighting(panel lights switch)? If so, it is a piece of 12 volt electroluminescent wire which is held in place with copper tape. The wire is available on eBay or some electronic stores. It's tedious work to strip out the old, rewire and tape in place but I think the only alternative is to replace the panel.
Some have had success by clipping the end of the old wire and taping- it didn't work for me. My boat is a 2007 41DS so the panel should be the same.
Good luck.