I am having trouble with my battery dying if I don't start in every day, brand new battery. I pulled fuse 51 and it stays charged longer at least 3 or 4 days ( haven't tried it longer), i need to know what to replace. Power mirrors don't work, radio volume won't go above 7, doors unlock but don't lock

 

What systems are powered by fuse 51? Battery going dead overnight indicates a draw.... Keep in mind, something as simply as the glove box light staying on will kill the battery overnight.

 

Like the thread you previously posted in says, the 51 appears to be the IOD fuse or ignition off draw. This powers thing like the OBD, radio memory (will stop it from turning on if not powered). Dome lights ect

Do you have aftermarket stereo, obd devices? I've seen LED lights play games with the circuits and cause the cargo lamp to stay lit very dim, even though all switches are off. Might even be a back feed situation but the power wasn't enough to light a halogen

 

I would expect a courtesy light is staying on somewhere......