I agree with Knoxie89; As of about 2015 the design was changed such that it's the detection of a high current drain in the motor that stops the stairs. The motor won't be damaged. But, I also wanted direct control over the stairs deploying. See a related post.
http://www.forestriverforums.com/for...ps-137840.html
There you'll find that I added a jumper switch around the magnet switch for the screen door. Just makes the stairs think the screen door is closed.