[Regulus]

Yes there is only a plug with a clip, and one guide on each side in the window itself.
Mind the wire going to the door lock though. I struggled fitting that again.
Try to leave it in the door lock mechanism, and remove it in the end where you found the black thingie

Edit: Lower the window fully and remove half the holder in the bottom, to get the window out. The holder is 2-parts, one on the inside, and one on the outside. Then wiggle the glass out