Hey thanks for the welcome! I've had my 2000 bonneville for about a year now, nice to find a friendly and informative forum such as this!! I'm in Fort Collins, Colorado, and currently it is cold and snowing outside! LOL.
Yeah, replacing the entire cowl didn't seem right, esp for a little plastic hose line attachment that looks quite easy to break off. Being that it is a cold and snowy state, most likely the past owner slammed their ice-scraper into the line and broke the attachment off. Hope someone here has a good suggestion for this. Cheap and creative solutions are always welcome!