umm...if your planning on using an led where a halogen bulb's supposed to be you probably will have a problem with the beam. the light source from a halogen bulb is in a different place than an led & the reflector is designed for the halogen bulb. i just bought the new B&M led iq fly light & it produces a very bright wide beam of 40 lux which is way more brighter & wider than the halogen lights. they however use special optics to produce the wide bright beam. the light i speak of is on this site: http://www.bumm.de/index-e.html save yourself all the aggravation trying to make an led light out of a halogen light & just buy this light. you won't be sorry....