This Christmas season we found that some of our big, bright C9 multicolored light strings weren’t working so well. So, I decided to try to be a little greener this year and bought some strings of the new low-voltage LED lights. I climbed up on the roof, attached them and plugged them in. Then, I had to check the connection to see why they weren’t lit up, and I realized that they were, indeed, lit up. (I’m making little quotation marks with my fingers when I use the term, “lit.”) They are about 1/5 of the brightness level of the old incandescent lights.