I just bought my 40x4 char lcd from
Timeline, got her wired up and working beautifully. The backlight version of the one I got cost me $30 + $5 to ship, and I wired it according to the L4034 schematics by nathan stuart or whatever his name is. Per forum suggestion, I replaced the 10K pot with a 5K, and it helps significantly... and because I couldn't find a 50 ohm pot, I left the 100 in there, and that one works very nicely as it is. Perhaps a switch for the backlight is all I'm missing, but I mostly drive at night anyway. Oh well, let me know if you need something.
-Ande