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this is from http://www.dimebank.com/Light-up.html
quote:[HR][/HR]One thing to note is that H4 lamps are not legal in the US; the ancient DOT laws against separate bulb headlamps apply, so H4 lamps are marked "for off road use only". Most jurisdictions don't care any more; maybe one day the law will get changed. If you care that much, use the sealed beam halogens and accept the results. (The non-sealed beam lamps that are now OEM equipment on new cars have been individually approved by the Federal government.)[HR][/HR]