THAT would indeed be an interesting challenge! I went back and re-read Post 43 and you're indeed right about wanting the center lamps to light only on turn signal flash, but not with running lights OR brakes. I missed the "or Brakes" part. I'm not sure how one would do that without a whole lot of work.... I had interpreted "signals" to mean both turn and brake, which i would think would be beneficial - third brake light plus turns.