Hi, all. I need a little help. I have a 2nd battery installed to run my accessories, stereo, lights, ect. I have the fuse block keyed and a battery isolator so my main battery doesn't go dead. But my 2nd battery keeps going dead and I can't figure out why. Nothing can stay on due to the fuse box being keyed. I'm throwing my arms up and coming to the professionals here on the forum. Any ideas from anyone out there? Thanks in advance for any help.