I found something very interested on the L79 tonight. I would never think I would see a fiber optic wire on a 1968 nova. Was this common on GM cars in 1968? The fiber wire comes off the corner of the dash light over to the ash tray. When I pulled the dash out I seen this wire but never really looked at it until I broke the dash down over the weekend to clean everything up. I was shocked and thought it was a really neat option. On the 1968 nova ash tray which is a 1 year only part the fiber wire pushes into this little plastic tab. I guess when you pulled the ash tray out to clean the ashes out you would have to unplug this fiber from the ash tray housing. I have never seen this before at least on a 1968 nova.