100% play & plug, very easy to install, no modification is needed.

Suitable:
Audi A3,A4L,A6L
BMW 5 Series (E60 / E61), X5
Mercedes-Benz E-class,ML class,C-class,A-class
VW MK6 Jetta,Magotan,Bora,Tiguan,Lavida,Passat 02+
Skoda Fabia (some models),Octavia (some models)
NISSAN QASHQAI (some models) X-Trail
Vauxhall / Opel Astra H and J Models,Vectra C 2002-2009, Insignia 08-12 (some).

Package Included:

2x HID H7 Bulbs Holder