IAC spring- which way does it go?

The spring in the IAC valve has a little plastic fitting on one end. Does that fitting go up into the valve coil, or down into the moveable plunger thing? I'm wondering if the previous owner put the dang thing together wrong. Thanks,
 
-Rick in Pa

Rick, please look at this http://www.mx6db.co.uk/index.php?loc=4&id=6&view=guide
 
It may not be what you actually asked for but I hope would be of some help.

Thanks. Not quite the same valve as on my buggy, but helpful.