Seriously...my worst night...I put alot of hard, tedious, custom work into headlights and the things that keep me up at night about them are the little miscellaneous lighting modules you install in there that are just extra. Those extra little units are the ones most likely to fail....and when they do, i have to have the lights shipped back and tear them completely down and re-install another unit.....all for a $50-$100 part that went bad.....5-10% of the actual product cost. oh well.....it is what it is.
Anyways....he sent me his lights, and I had them popped open, old part removed, new part installed, old shroud secured better and sealed back up in the box ready for shipping within 2 hours.....new record for me.
Turned out great and the customer was happy.