Thanks for the instructions. I am grateful that my cable replacement came with the bracket for the LED - avoiding some of the tedious work. I replaced the hard drive cable at the same time as when I upgraded to a 1TB SSD. I am looking forward to the performance enhancement with 16 GB of memory, new fan, et al. My mid-2012 MBP Unibody is better than new.

Thanks and quite helpful.

When replacing the cable, it is helpful to pre-form the bends before taking the protective cover off from the adhesive portion of the slim cable (that leads to the LED sleep light). Turn over to view place to pre-bend. Be gentle - hands only.

I used a really thin, plastic spudger gently inserting from each side on mid-2012 and then very gently twisting the spudger. It worked fine without tearing or damaging anything. When reinstalling the connector, do not forget to twist it 180 degrees so that the open side of the connector is facing down to insert properly for seating.

When seating the fan, be aware that the cutout on the fan for the wire harness may not match up with the cutout on the board itself. Line the wires up to the board and then seat the fan in an incremental manner - gently pushing at each connecting hole. Then put the screws in without tightening at first. Once all of the screws are seated, then sequentially snug them up. Finally, push down gently on the fan and snug up each screw without over tightening. I found that the fan seats a tad further and I wanted to avoid future rattles. DO NOT OVERTIGHTEN THOUGH.

Before reinstalling the new fan and for novices like me, do not forget to have a can of compressed on hand to clear out years of dust, fine fibers, and maybe even a cat hair from the fins blowing outward. Do not shake the bottle and hold it upright, and use small squirts of air.