Hi all, I am planning to do the LED Daytime Driving Lights retrofit (RealOEM.com * BMW E53 X5 4.8is Retrofit kit, LED daytime driving lights), but the BMW dealer wants US$600 for parts and labor, which is pretty expensive. Just wonder if this retrofit is DIYable, before paying money for the parts, it would be grateful if someone can share the official installation instruction, so that I can determine if I am capable to do it. Thanks a lot!

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--2004 E53 X5 4.8is - ECE version; right hand drive; Located in Hong Kong; ext. black sapphire metallic; int. leather black; adaptive dynamic bi-xenon headlights; 16:9 onboard monitor w/o navigation; 20" genuine BMW Y-spoke 214 wheels with Bridgestone Dueler H/P Sport tires; Int. rear view mirror w/ compass.