Hello Dennis and Paul. Welcome to the forum Dennis! I don't know how much I can do from here at work, but I'll try. Taking a look at your original photo, I have circled the mounting tabs on the switch in red. If I remember this correctly, as I just replaced the switch on my 1772. With the seat positioned so that the metal part of the base is facing up, you should see a series of 3 square holes. The mounting tabs on the switch should be facing upwards as well as the metal base of the seat. Insert the long metal part off the switch into the large square hole and slide it in so the whole switch is between the metal pan the seat cushion foam. Once all the way inside the seat, simply slide the switch backwards while keeping the switch beneath the metal pan until the mounting clips/fingers can attach/clip onto the strips of metal between the 3 square holes. A picture says a 1000 words and I wish I had one right now of a mounted seat switch.
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