As you seat the cover, note that there are 5 cables dangling from the new part.

A pair of wires with a red connector and dark wire.

A pair of wires with a yellow connector, one yellow, one white.

A tiny red and black wire with a white connector.

A gold ribbon cable with flat square connector.

In my case, I did not notice the black wire until I removed it. I believe it is the ground wire for hot shoe devices. It slots into a tiny space on the top of the camera, in front of the circuit board.

Bend the wire to match the old one, as mine was straight and difficult to manage.

Use a tweezers to slide the wire into the white connector slot on the board.