unknow Unpluged wire in '92 v6 3.3

Hi
I have a Grand AM '92 V6 3.3l and there is a wire with a red plug (i thinks it's red) , the wire is near the windshield at left.

Anyone got an idea of what this wire could be ?

thanks

Do you have any lights on or is there anything thats not functioning?. Could you take a pic of this wire?

everything seem to work corretly
but i'll try to take a picture of it

here are the picture

http://www.picturetrail.com/pothash666

I have a 93 GT and I believe I have the same wire dangling there. Not sure if it is for an option or a diagnostic plug.