A poor electrical ground can cause the dome light not to work.Google+
Car Problem Reports
Honda Accord Dome light may not work due to poor electrical ground
Honda Accord Problem
Average Mileage: 103,311 mi (50,000 mi - 149,000 mi)
Visitor, 2010 Honda Accord, 50,000 mi
The dome light quit working. I didn't have time to check the bulb and did nothing. About a month later, it started working again. Then about 2 weeks after that, it quit working again. It hasn't worked for about the last 4 months.
Visitor, 2007 Honda Accord, 96,245 mi
The front dome light will not come on when the front doors open. I replaced the whole thing and it worked for a while then stopped working again.
Dome light sometimes does not turn on.