DTF,

I changed the headlight doors myself on a bit older E-class, I believe that they updated the lights in 94 so I am unsure if the headlight door and the headlight itself is still seperate on your particular year. If they are, then the swap is relatively easy and the wiper is not part of the door. The Wiper arm flips down and can be removed if needed by loosening a nut that you will see when you flip the wiper arm down. As far as $400 bucks goes, you can buy a set of euro spec lights for around that amount. Just my 2 cents

Jason M.