I just installed a set of these on my FOGS and LOWBEAMS and had a set left over that I was going to use on another car but decided not. This is a plug and play install and will not cause any warning lights on the dash. Install instructions can be found here: http://www.benzworld.org/forums/w164...ed-2008-a.html
If you already have stock HID/XENON lowbeams you won't need this unless you want to use them on your fogs. If you didn't opt for the XENON lighting package this is the next best thing
just sold the car and have a USED set of low beams and fog lights if anyone is interested. already set up for the W164 so pretty much plug and play. $500 for both sets or $275 each.
took me about 30 mins for the low beams, hardest part was removing the stock bulb and twisting in the hid bulbs. fogs take mins and is straight forward.
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