yeah it's moisture trapped inside the lens that turns to condensation as the nights are colder. i don't know what the accord lights look like, on some cars you have a removable circular plastic cap the size of a 2p on the top where you can open the unit to adjust the alignment, if you leave a hairdryer blowing air in there for 10-15 minutes that sucks out the moisture. its only a short term solution as if the seal is gone that is what is allowing the water ingress. a more permanent solution is to crack the light unit open then reseal it, thin layer of black bathroom sealant would do. if you want to do a proper job hide a couple of small silica gel bags in the back area behind the lens to suck up any bits of moisture that make its way in.