The QC and light output does not seem to be great with these. I was considering them for awhile but I'm glad I decided to do my own retrofit.Just received mine after a long wait. Passenger side low beam dead. Everything else worked. Has the external relay taped/ bolted on. I'm assuming it's the relay from reading this thread but don't feel comfortable bypassing it under warranty. Have had good experience with TRS on replacements before but pretty disappointed considering the price and time spent on this. Might just return and stick with the katanas.