Here ya go, Phil...CN is the upper line and indeed the tags are yellow with black letters.
Opposite side of the tag....
My lower cooler line....you can see where the tag <span style="font-style: italic"><span style="font-weight: bold">used</span></span> to be [img]<<GRAEMLIN_URL>>/frown.gif[/img]
And finally, a picture of the upper line showing relative position of the tag. You can see where the line goes into the radiator at the very top of the photo...