I found a "fiber optic spray with stem base" at a local store for about $15 and picked that up. It has at least a couple hundred small "plastic" fiber optic pieces about a foot long each. So far, as a test, I've cut off probably 10-12 and pushed them through a small hole I drilled in the center of a 3/8" dowl piece I cut into 1/2" lengths... it was handy. The drill is probably 3/32" or so. Let one end of the fiber extend about 1/16" beyond the dowl, and put a drop of medium CA on the other face to keep the fiber from moving. Then sanded it down flush with the dowl on the short end. That smooth face is what I have in mind attaching to the receiver where the LED glows through. Did the same on the other end of this test cable. So far it looks like it might work. Holding over an LED on my recharging stand for my drill and I get a fairly decent red glow out the other end. In full sun it might be a little tough to see but I think it will show up well enough if it's shaded at all so maybe recess or provide a sunshade around it and just maybe it will work. I think it will work well enough to see if the LED is blinking/off or solid at least. I'll make up a couple more "fiber optic extensions" and then experiment with ways to attach to the receiver. Then a quick install in one of the older planes to start. If it works well I'm thinking lights right on the instrument panel of the bigger planes!!