I just bought a 2004 TSX as my first car and the DRL light on the dash is on, and I have no working DRLs. I've read that the DRL modules on hondas and acuras go bad all the time and they're usually underneath the dash on the drivers side. I look a look but didn't see the gray box, does anyone know where it's located? I've also pulled the glove box out and taken a quick look in there.

 

See attached diagram.

good luck