Steve…I picked up the ladder through Camping World for around $81.00 + shipping.
I imagine you can find the same ladder through some of the RV Surplus places for less…but I went through Camping World because their shipping to Alaska is really fair.
Here’s the link to the ladder
http://www.campingworld.com/browse/skus ... H&tcode=37
The door opens fine…. and I’ve never had a problem with it whacking the lights at all.
Our door, even when oiled is pretty stiff …so I cant imagine the wind or something blowing it into the lights..
As far as Keeping the door from opening all the way goes…
The ladder only protrudes 7 “ from the bus body ….so it opens most of the way (Less 7” )
On a side note…I worried a little that ladder wouldn’t be strong enough when I had to install it in two sections.
But , It’s really strong and doesn’t seem to move about at all when I’m using it.