Hope you can shed some ligth on the but following the instructions on the following link gives a very dim TFT display.
This shows a jumper from the +5V connection on the TFT to the BL connection, both being supplied from the 3V3 connection on the arduino. In this orientation it was very dim.
I'd noticed a few statements about the backlight could be dimmable by PWM, but couldn't find any reference to it in a breif flick thought he header files. I removed the jumper between BL and +5 and the screen gets notably brighter! How should this be wired?