From: utzoo!decvax!harpo!ihnp4!stolaf!minn-ua!pmt Newsgroups: net.cycle Title: Re: Motor/Bi-Cyclist Beware Article-I.D.: minn-ua.264 Posted: Thu Jan 6 00:17:57 1983 Received: Fri Jan 7 05:34:07 1983 Those gadgets are know as "headlight modulators". They sell for an over- inflated price ($40?), but I saw an article in a Popular Electronics not too many months ago on how to build one. Has anyone out there ever seen one in use? And does anyone know if they shorten the life of your headlight?