The seat weight switch will likely have a connector near the seat, but if not then it simply unclips from the seat spring wires that it lives between.

Also, for cleaning, you can easily remove the lower seat cushion. The cover over the front rail simply unbuttons. At the rear rail there's a metal bar in a hemmed seam. Bend the middle of the bar out to allow the tabs at the ends to disengage from their slots. Awkward to do with your fingers when the seat is mounted, a lot easier once the seat is out. That's also how you get at any seat heater grid to slide it out.

I don't think it's been mentioned about a headed pin stud sticking down from the middle of each seat rail that engages into a keyed slot in the floor. You'll know it's there once the four bolts are removed as the seat will remain locked in place. You need to move the seat maybe just over an inch to allow the pin to disengage so the seat can be titled up. I want to say you pull the seat back rather than push it forward, but all of a sudden I'm uncertain which way. You'll soon figure it out. Have the seat tilted all the way back so you can feed it out the back door on its side, best done with two people.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now