Spent quite a significant amount of time looking thru my Haynes and owners manual to try and find out what IOD was. Should've known to just come here first! lol
I am having a similar problem as brents1986 had. Although, last fall when I could not locate any options (switches nor fuses) to turn off interior dome lights, I just pulled all of the bulbs out.
I hope I am posting this in the correct location (I have a very difficult time navigating on a phone) and the thread is not too old to get some replies.
Last week, I discovered that the exterior back up light, on top of the cab was on, many hours after I had parked the truck.
Was able to turn it off by pulling the IOD fuse out. And figured my immediate issue of battery drain was solved.
Found out today, I was wrong. Truck is deader than dead. Going to start diagnostics with a spare battery....but, of all things to go wrong, electrical is the worst for me. It is in fact what inspired my purchase of this Dodge last year...can't figure out why I have no tail lights in the old truck! (Yes, the wires, but where)
Anyway...any ideas what I should look for ?
in the 2001, Dodge 2500 5.9