I use them in aftermarket 4x6 headlights (United Pacific p/n 31375), low beams (projectors) and they work great. In the projector, the best position is horizontal (see figure), although the LED must be removed and installed to achieve the ideal position (because it is not possible to lock or unlock the position while the LEDs are installed in the headlight) . Almost perfect lighting, but with a few dark spots (inside the projector). Just to test, I installed them in high beam headlights (reflector, United Pacific part number 31376) and in this case there are no dark spots. In this case, the position of the LED should be as specified by the LED manufacturer in order to achieve a higher concentration of light (unfortunately I did not photograph the high beam). from a different manufacturer and from a different shop, with 5 "360 degrees" CSP thin bezels (advertising "20,000 lumens") when I realized that the Aukee LED bulb REALLY stands out, STILL in projectors, one just has to spend some time finding the best lighting scheme; because the "360 LED bulb" (5 fine facets) wastes a lot of light on projectors as well as well-designed reflectors. UPDATE #2 (after trying a brand new Auxito kit at a very similar price) I bought 4 different kits (Aukee 18000 Lumens Ultra Thin, Auxito 16000 Lumens Ultra Thin; Chinese 20000 Lumens kit with 5 fine bezels and another Chinese 18000 -Lumen kit with 4 thin edges). ), have 2 ultra-thin surfaces as they give a pattern very similar to halogen light but with more luminosity; while the multi-faceted "360 degree" LEDs offer very little efficiency even though these bulbs produce many more lumens. However, Auxito worked very well; Aukee's ultra-thin 18,000 lumen LED bulb gave a bit more brightness in my projectors (the position of the LED chips in projectors should be up and down, and in projectors the LED chips should face left and right) and in my high beam Reflectors, focused and stronger beam of light (and of course multi-sided LED lamps that completely lose their original pattern). The best result of the Aukee LED lamp was not achieved by the fact that 2000 lumens more; But the design and type of LED chips, their shape and ultra-thinness (despite being slightly thinner than the Auxito on the outside) resulted in a better low- and high-frequency pattern.
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