I own Bosch euro smilies currently, but had a set of depo smilies I got with a parts car last year. I took them apart because I saw loose screws and wanted to investigate. They are really garbage lights. My suggestion is cut your losses, sell em for 100.00 or so in the classifieds and wait for a set of Hella or Bosch euro smilies to pop up.
You may pay double or more for em, but they are WELL worth the money in so many ways.