Posted this on the Boat Restoration forum but also thought I'd try it here too.<br /><br />I friend was telling me about a whistling device his dad used to have on his fuel vent line so that he could listen to make sure he didn't overfill his tank. I am in the process of re-doing a fuel system on a boat I am restoring and would like to install a similar low cost warning system. I searched the web and found numerous references to similar devices for home heating oil tanks and also a reference on Practical Sailor to a "Signo" whistling device that can be used on a boats fuel vent line. The problem is that I can't find out where to buy one. Even searched the iboats Mega Mall with no luck. Any advice on where or how to locate one would be appreciated.
