My Taillights where Just as Bad so i just Tinted them they look great on sliver cars.
there Very Dark but they look amazing At night and during the day.
The sealing yes, use Black or Clear Silcon. And make a 1/4 inch Line all the way around. Also fill around the Reflector And smooth it out so its level with the rest of the light then if tinting sand with 600Grit and then u get to choose how dark u want.
Message me if u need anymore info on fixing these up mine were totaled like fish bowls and shorting my Blubs and fuses, after the sealing there hasnt been any water in them. and the tint is amazing
Mine are the darkest u can go before there no longer transparent
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