They were delivered to me only yesterday so my use is limited. But so far I'm impressed with the ease of installation and performance. I also replaced both headlights at the same time on my 2013 Ford F-150 STX. The LED lights were a simple replacement for the original halogen bulbs. The fit of this (9008/H13) was perfect, no modifications were required. My main concern was the alignment of the LED elements inside the case, which is a standard reflector case. Some lights allow you to "unlock" the lamp assemblies and rotate them in a different direction. They are detachable and can be rotated in the housing if necessary. But for my application it wasn't necessary; The LED cells are aimed at the 3:00 - 9:00 position out of the box and the rays are correctly reflected inside the case. Had a chance to see them in action last night on the way home from dinner in moderate rain and they worked great. The difference in coverage compared to halogens was pretty amazing. The attached fans are quiet and there was more than enough space behind the housing for the ballast and connection cable. Considering the cost of replacing halogen bulbs and the much shorter lifespan of standard higher intensity bulbs, this upgrade was a no-brainer in terms of cost. For a few dollars more than replacing halogen bulbs, you get a turnkey solution that's much more efficient for nighttime driving. Highly recommended.
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