With iOS 18 and a new ability for end users to pair replacement parts, will it enable the TrueDepth sensor of a replacement part?

I found the service wedge not necessary. Of course, because I didn’t have one, I didn’t know what I was missing, either.

Follow-up question: Which prior models does the 2019 21.5" iMac share its screen with?

What is the part number of a replacement screen?

I think, I know what I did wrong. The display data cable connector has an integrated foam shield on top of it and the display data cable lock bracket. When reassembling, I must have forced the lock bracket over the foam shield in such a way that it put strain on the connector, thereby making it not mate properly. The solution was to feed the foam shield through the bracket, so that it was above it, when I inserted the connector.

I mean, is there a particular connector I would want to look at, other than the display data cable connector. I do not have a functional block diagram to see, whether the computer has a separate connector carrying power to the backlight.

Just did this, but now my display remains dark. I have opened up the case and reseated the display data cable connector. The display is still black. Anything else I might have done wrong?