Either your battery is dead,
or your alternator has failed.
Short
possibly
Dead cell in the battery or the ignition or lights were left on.
a dead battery
I was wondering is there a fuse diagram for the 2003 Ford Explorer XLT? What causes the left and right signal lights to not work on the 2003 Ford Explorer XLT? Can the side mirrors on the 2003 Ford Explorer XLT?
water in the wiring or a low battery
A short in the wiring.
Blown fuse or defective brake light switch.
A loose battery cable can cause your vehicle to on most stall and it can cause the lights to Flickr. Make sure your battery cables are tight and free of corrosion.
If you have no battery then you have no power.
No. A bad battery is not causing your dash lights to go on and off. A different part is bad. Without equipment I have no idea what it is.
Most likely turn signal flasher