Let’s see if these help:
Wire feeding down from seat through the upper plate
View from rear of base showing routing inboard of drum
Wire coming up through the X made in the carpet at the rear of the seat base
Connector disconnected, red bar is visible
Wires into the back side of the connector
On earlier models, I have found only a needle nose plier is needed to pull out the red bar and free the wires. On later models, there is a tang on the metal prong that also needs to be released.