OK so.. if you have HID LED's, that require a ballast (like the Bi-Xenon HIDS that are OEM) then yea, I can see them being used as headlights. Although why you would want to do that I don't know. That's a half assed way to have an LED headlight and it's most likely a downgrade. The hard part is since a shop did it for you, you/we have no clue as to how they installed them and what did they use. The simplest route would be to use a "D4S" (the socket type for our OEM Xenon HIDS) LED... basically it's an LED bulb attached to a D4S base and it uses the OEM HID socket and ballast (plug and play)... the other option is to wire in another ballast. They range from cheap to overpriced since most of them are china imports, which by the way typically have ONE yes just ONE, maybe two LED on them.. I don't think any OEM actually uses a "converted" led bulb. Not trying to dog on you but you have to be careful and aware of what's being done when it comes to shops doing electrical/any work. There are circuits on this car that are very sensitive and known to blow if they are "worked on" with power supplied (like the rear BCM). Does your AFS still work?