all you need is the 6 pin holder and two pins. You remove the 4 wires with the female pins and put them (in different order) into the new 6 pin holder. You need the extra two pins so that you can wire the City Light to your side markers (socket no. 3).

- Connect old pin 2 (brown wire) goes into new pin socket 2
- Connect old pin 1 (green wire) goes into new pin socket 6
- Connect old pin3 (yellow wire) goes into new pin socket 5
- Connect old pin 4 (white wire) goes into new pin socket 4

I believe these are the part numbers

qty (2) - 006 545 80 28 - six-pin electrical connector, socket
qty (2) - 009 545 30 28 - six-pin electrical connector, cover
qty (2) - 003 545 26 26 - pin, connector

BTW, I got all the parts from the MB dealer in Honolulu, so it's available from MBUSA for $20