I have an issue where the battery of my 2005 Mazda 3 goes dead after two days. The voltage draw is though the room fuse.

When instrument cluster and factory stereo are disconnected there is no draw.

Any suggestions?

What could be the problem??

 

you might have a dead cell, do have any accessories wired to it i.e, neons, subs, etc. Terminals could be loose, corroded, battery could have been overcharged.