My original display was going bad with wide vertical lines of mis-mash showing up on the right side of screen. The display glass also had a small 3 inch wide crack near screen bottom. So I ordered new glass, and an lcd panel from ifixit.
Great directions and illustrations! The main problem I had was getting the display data connector re-attached to the new lcd screen fully (reverse, step 32).
The weird angle of the receiving receptacle, the way the cable is twisted and how bloody minute the connection is, all combine to make this a painstaking and tricky match-up. I hooked up tother end of the cable to logic board and powered up MacBook to test before re-assembly. Screen was blank. I played around with the connection further to make sure it stayed fully seated when lcd screen was positioned in display assembly and cable stretched out. After a couple of tries the display illuminated. Miracle!
Re-assembled all the parts back together and everything works correctly (except Bluetooth - I never use).