To go with the LEDs without the OBD giving a bulb out warning then resistors, as discussed above need to be wired in. This is "modification" and almost a modification to the wiring harness itself. BMW routinley denies warranty coverage on "modified" parts. If you had any malfunction of the headlight or the wiring harness melted my money would be on BMW voiding the warranty for that specific problem. It's not like they would void a warranty on the suspension etc for changing the bulbs.

This is just my opinion.

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2008 X5 4.8i BSM/Blk - premium, sports with 20" 214s, navigation, rear climate, adaptive ride, dark bamboo, running boards, 3rd row seats, USB audio, high speed maximum, etc etc

Mods: Smoked reflectors | Hoen xenon match fogs and angel eyes | LED plate bulbs | 18" winter wheels

Other vehicles: 2002 M3 Vert TiAG/Blk - with every option and many mods | 2009 Chevy Silverado LTZ - fully loaded