I couldn't find where my Grand Prix headlight was getting water in it either so eventually I just bought a new one. Check for really microscopic cracks on the housing and check that none of the o rings on the bulbs are broken.
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'99 GSX, 5-speed, 60k miles: Greddy filter / RRE uicp / 1g bov / Autometer boost gauge / Injen-copy intake / Megan DP (not installed)
Coming soon! Thx to Blackcrow & nova1313!
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