Help identify this plug

[deadbroke]

I have taken apart my dash and I know there are a couple plugs that don't plug in but I cannot remember for the life of me if this gets plugged in and what it is for. if anyone knows I would appreciate it. truck is an slt 2006 dodge ram mega cab 1500 2wd

 

[deadbroke]

Nothing, if anyone has a chance to look at their setup I'd appreciate it.