deez,
I had a vent in my clearview windshield go out and just ordered a new one last week. There are several different ones listed on ebay motors. The one that fit mine ('97 Tourer) was the one with the slotted vent on the inside of the shield. You'll probably have to see the picture on ebay to understand what I mean. Anyway, they list from about $45 up to about $60

, which is much less than the local steeler wanted, $102. The part no. is a honda part no. #45-1252N. This is listed for the GL1800. They are all tinted, as was my original, even though my shield is clear. I ordered it from Honda Line Direct. Just my 2cents, hope this helps.