I have got an odd one.

I started the truck, and I have no dash display.

The radio is fine, the tuner is fine, no codes.

The batteries are fully charged, and good and connections look good.

I use it to pull my 5th wheel and don't drive it in the winter much to keep it out of the salt, and it has been sitting.

I put the battery charger on it and started it when it fully charged.

I think the first step is to disconnect the batteries overnight and see if it resets.

Any thoughts?
Eric