Mechanical installation is very straightforward. Electrical requires new connectors and moving the wire pins to different locations in the connectors. Procedure to convert connectors for Euro headlights
Aiming requires a cardboard target.
No relays are needed if you stick to a 55/60 watt bulb.
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E