Put in a new alpine stereo a couple weeks ago, and a week later, on a Sunday night in Minnesota I go to start my 2009 Dodge Durango and it doesn’t have enough juice to start the engine. So I put a jumper to the batteries and it started up just fine first try. My truck was fine until Thursday afternoon when I go leave for work and it doesn’t start again, and then was ok until the week was over. After doing a parasitic draw test on the battery and pulling EVERY FUSE & RELAY. I find that the IOD 1+2 Fuse is drawing about .70 Amps of power. Can someone help me find out what exactly the IOD Fuse does and how to fix this?

I took the radio and aftermarket harness out and there was no change in the draw from the battery