I installed mine last year. Go to 2phast.com and click on the 190e in the lower left hand corner. Scroll down to Eurolights / HID and you will find step by step instructions along with photos.
Wires simply transfer to new 6 prong plug if I remember correctly.
The city lights connect to the parking lights - it's all there.
Good luck!

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1993 190e 2.3
Spruce Green Metallic
62k original