2003 Honda Accord Q&A
2003 Honda Accord Question: replacing the drivers side tail light
Depending on your model open the trunk pull back the surrounding trim carpet to gain access to the nuts that retain the lamp (I believe you need a 10mm socket). On some models the first line of instruction for replacement says remove the rear bumper so it implies some bolts/nuts are hidden behind the bumper which seems ridicules. - patrick mannion
Leaking gaskets around the tail lights can allow water entry into the tail light assembly. New gaskets should fix this concern.