Guest ianang Posted March 14, 2011 Posted March 14, 2011 On the C5s halogen lights, the outside light is the dipped beam, the inside light is an H4 double bulb. One part of the H4 does the high beam. Does anyone know what the other does? Quote
sifaan Posted March 14, 2011 Posted March 14, 2011 the double filament bulb is for the dimmed/main beamthe single filament bulb is the foglight Quote
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