Hmmm... if the H7 bulbs are truly extreamly bright, my suspicion is that they are not working. When I picked the car up from having the aiming done, the tech showed me what was going on against a wall. What was happening when the highbeams were turned on was that there were bulbs being lit, but they threw hardly any light and that light was of a weird pattern (a couple of rings of light rather than beams.) There is always at least one bulb lit in the highbeam enclosure. As he had little experience with MBs, he was not really clued in to what the problem might be, but was guessing that the reflector was somehow damaged and so the output refraction was somehow skewed. So, if I understand you right, the H6 bulbs should come on along with the H7s? Also, I've noticed that the H7 comes in a highbeam and a high/low beam. Is this application strictly a highbeam?

-l-

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'84 300d turbodiesel (83K miles)
'96 300d (226K miles)
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other fine diesels...
'99 Polaris diesel (Fuji Heavy Industries single)
'01 Diesel Trail gator (Yanmar triple)
'95 John Deere 970 (Yanmar quad)
'11 BMW 335d
'12 VW Jetta TDI

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'00 BMW K1200LT
'02 BMW R1150RS

'15 BMW R1200GSA