Comment by thefifthsetpin

My opener runs a tiny little garage door in parallel with the big door in front of my garage, and monitors the position of the little garage door with simple switches. This is all in the plastic housing that holds the motor. If yours is the same, you might be able to steal the same signal.

Sadly, the little garage door doesn't look like a dollhouse garage door; that'd be too cool. It looks like a wire on a track.