Don't know, maybe electrical?

[timlsalem]

So, here's what's happening. When I shut the motor off and leave it sit for hours or even days then start it up the odomiter has switched from mileage to trip meter and a lot of times the dinging, that suppose to, when you turn ignition on doesn't ding, just silence. Then other times it will work fine. I'm guessing that maybe there's a short someplace in the key ignition?????

[dieselmatt]

How about some background info on the truck so everyone knows which engine and electrical components we are dealing with here?

My first inkling is to wonder about the health of your batteries. Are they new, if not, how old are they?

[timlsalem]

95, F350, 7.3 stock, new batteries