Chosen Solution
It was a combination of being unable to read all the number plus how the ‘frame’ wa attached. Seems anything attached from the aluminum frame from inside the iMac was pulled loose by the wires. So my display is dead black. Would you help me identify what needs to go back and how to tell where ?
This guide should show you all the relevant cable attachments: iMac Intel 20" EMC 2133 and 2210 Display Panel Replacement