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Problems associated with White H7 Xenon HID Light Bulbs

13721 Views 14 Replies 12 Participants Last post by  English
I recently purchased a set of two White H7 Xenon HID Light Bulbs to replace the light bulbs that came with my 2004 treg. I didn't know how to install them myself and the Volkswagen dealership said they would do it for $30. When I took them in the mechanic said that they might melt the light housing and then I would have to replace the whole headlight unit!!!! The specs for the light bulb are Hyper White, 5000K Color Temperature and the Type/Volt/Watt:H7, 12V, 100W. Before I go installing them and possible damaging my vehicle, I was wondering if anyone else had installed bulbs such as these and had any problem with melting the housing or frying the electronic due to the hight wattage and voltage (both are double what the factory bulbs are).
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Yep, the factory HIDs are D1s bulbs using 35W ballasts. I have no idea what you got sold, but I bet there's nothing HID about them. Did you get the transformer ballast (box) with them? H7 is a type/size of bulb, but not what comes in the HID-equipped Touaregs.

Just find a total-loss TReg somewhere and buy the whole lighting assemblies out of it. Then you'll get the right housings and projector lamps, the ballasts, the self-leveling mechanisms (required to be legal in the U.S.), etc. Putting an HID bulb in a non-HID housing generally results in a poor lighting pattern since the two types of lamps have very different locations and shapes of light output.

Cheers, John
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