Window Roll Up Module

Hey Folks,

I want to add a window roll up module to my 1996 Chrysler Sebring Convertible. I was looking around on Ebay and found one but it states that my car must have a rest at ground reverse polarity window system. What do they mean by this?? I installed my own remote start and keyless entry so have a rough idea what I am doing but not sure what they mean by this.

If you know, let me know please.

Thanks!!

I think it means that when you probe the wire for the window system (when you're not using it), it will show ground. 

But then when you use the window and probe the same wire, it will show positive.

I'm still new to this, so don't go just by my post.

That sounds correct...

Naughtydog