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Old 01-24-2003, 04:57 PM
HTN-E430 HTN-E430 is offline
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Join Date: Jun 2001
Location: So Cal
Posts: 124
H4 bulb has two filaments for high and low beams, H7 bulb has one filament and is used as either high or low beam. W210 has two H7 bulbs for low beam and two H7 bulbs for high beam. W124 needs only two H4 bulbs for low and high.
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