I've installed a switch (actually two in series to stop accidents) that force the stairs in regardless of the door/screen position. It's just a jumper across the magnet switch on the door jamb. But easier, just disconnect the cable harness to the stairs (viewed under the stairs) when they are in. The green chassis ground wire can just stay in place.
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2015 FR3 30DS
2010 Ford Escape Toad -or- 2012 Ford Focus Toad
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