Overhead resets every shutdown

[Howie67]

I was trying to use the trip and did the reset but noticed that all the settings reset every time I shut down. My mpg AVG resets to 12, my miles resets to something like 2734. I is there a battery in there that wears out? My lighter is working ok and my phone charger works with the key off so there is power at least there. Is there a different backup source for the overhead? It is nice to have the odo for trip. Thanks, Curt

[Mopar1973Man]

IOD fuse controls that I think...

[edcasey]

IOD fuse controls that I think...

That's right Mike. The IOD (fuse 12) is the battery constant to the overhead. Fuse 11 provides power when the ignition is on to the overhead. If fuse 12 is blown, your radio wont hold station programming, power mirrors wont work, dome light and cargo light wont work.... Also Howie, check your right and left visor / vanity lights. They are powered by the same wire (from the IOD fuse) that provide 12 volt constant power to the overhead.

[Mopar1973Man]

Well how about that I got it right... :lol:Funny part was I was guessin' at it...

[Lone Watie]

I was going to finish this file before I uploaded for all here, but it seems to be a good time to upload what I have for now. I've been working on putting together info on electrical system in a more-or-less user friendly format.

Junction Block_Fuse Data.xls