Batteries kept dying..turned out batteries were toast but for a long time they would die if it wasn't driven in a day. Kept on a tender, but felt I have some sort of drain...so I got new batteries and am looking into it. I connected a single battery to the positive terminal and placed my multimeter in-between the negative post and negative terminal. With the multimeter set at 10a setting. I was getting a reading of 0.85a checked fuses and when I pulled the stereo it dropped to 0.34a ....that still seems really high? I've read different posts saying 0.025. am I reading this thing right?

 

Figured it out. I had read about the 15 minute for the truck to go to sleep, so after that I was completely disconnecting the terminal and then reattaching through the leads (which woke it up)... If I disconnected it while keeping the leads attached to the terminal and post, after it went to sleep, it was only at 0.03... so i feel good about that. The stereo was still drawing around .5amps though,.. so must have been something faulty inside the stereo with the ignition 12v trigger... I wired the 12 volt supply to the stereo through a relay, which is triggered through the extra 10 amp (labeled "customer accessable" fuse) which only gets power when the key is in the on position)...sucks it has to reboot every time...but I don't feel like replacing it yet.