No; not to my knowledge. I, too, felt slightly nervous one day on a DC-9 family. I was sitting opposite the leading edge of the wing and there were no LED's deployed. On my previous flights with the carrier there had been. It was too late to ask and I had to have faith in "the crew knew what they were doing' and the takeoff config system. Later I found out there were different models in 'the family' and the carrier had a mixed fleet; some with LED's others not.