Thanks so much for this guide! This was my first Apple product repair and thankfully it went relatively smoothly. My iMac is operational again and the SSD has added a significant speed boost!
Being that this was my first time it would have been great if this guide also included a section on how to format and load a copy of the Mac OS onto the drive before Installing. I was able to figure this out relatively quickly with some internet searches but I required another Mac so I could download and install the OS onto my new drive with the SATA to USB adapter. There is probably another way or an easier way - but I was going in green! Would be a helpful preface to this guide. Thanks again.
After finishing my hard drive replacement I reconnected these connectors to test my display before using new adhesive. Everything was working beautifully. But then when I applied the new adhesive and went to seal the display on for good - the display power cable somehow became disconnected! I had to reopen the Mac for a second time which was far more difficult with new adhesive. When reinstalling double and triple check that the cables are securely inserted before the final seal. Sounds obvious but it’s quite the annoyance if something goes wrong at this point.
In my experience the cutter also worked very well for cutting the original adhesive. Unfortunately when I was reinstalling the display with the new adhesive strips, somehow the display power connector came loose. I had to open the display a second time and the cutter was not as effective against the new adhesive. I managed to break the cutter tool plastic wheel and cause a few small cracks in the edge of the displays glass as I worked! Be careful and go slowly!