One thing that she could have done is to interrupt the power to the adjusting switches with a switch added under the seat. She could turn the control switches on if she wants to move the seat, otherwise, leave the power off.
If her seat is like the 850 seats, that I put in my 544, there is a circuit board attached to the seat switches, but the whole assembly is powered by one wire. (plus a ground wire)
I actually did not put the controls into my 544 yet, I just plug the circuit into the seat and use a pair of wires connected to the battery if I want to move the seat!
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