I just replaced my old Coach-Step brand steps with a set of Kwikee steps. Bolt holes, plugs and wire colors all matched up but the step works the opposite of what they should. I am guessing my door switch is the opposite of what it should be. The ignition even extends the step. The only thing that is close to normal is if I shut the door, the step extends, and I turn off the step switch, then the steps will stay out if I open or close the door. That fact makes me think that just reversing the motor wires will not fix the problem.
It looks like I would have to remove the door frame to change the door switch or maybe get to it through the wheel well. Either way, swapping motor wires would be much easier if that would work.
2005 Holiday Rambler Neptune 34pdd, Cummins ISB 300, Allison 2500MH, Onan 8.0QD
Prior Toad-2001 Chevy 2500 CC 4WD
Toad-2012 Honda CRV, Blue Ox Aventa II