the #14 on this http://www.autostadtwest.com/images/trim.jpg

if it's the same as this one form VC where I get it from..
http://www.van-cafe.com/home/van/page_123_174/upper-door-lip-seals-pair.html

it has a groove and you have to slide it in the door lip... it sits between
the door lip and the big door seal

you may need silicone lubricant on the the door seal to make it easier to
slide in and may be a few drop of contact glue on the groove to make it
stay put