I have that copy. There is a better article on wiring and relays at the web site listed below. IMHO the Star article was too short, and while it gave useful part numbers, it glossed over the wiring info in favor of a detailed description of hooking up the vacuum controlled light leveling Euro controls on the dashboard. (there are also pre made wiring harnesses with relays available on the net). Also, they used some 500E Euro lights, but didn't say where to get them!
mechanical installation is pretty easy, and the wiring pin outs have been posted here by barrie. The above site also has aiming instructions that the Star article didn't cover. I will email you some info as well.
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