I have a drain. It’s .594ma just enough to drain my battery over a couple days time. I went through each fuse to eliminate component circuits. The one I pull that kills the drain is the 50 amp “Batt” fuse. I have a feeling it has something to do with my ignition switch because when the key is out of the ignition, I still have power going to some things like my fan and 4wd control And I think my radio. I was wondering if I am on the right path or if anyone had a better idea. I’ve put pile of work into this truck and just love it. 99 4door Tahoe 5.7