Speedometer not working on 2001 town & country

Do you have power on all of the fuses in the passenger compartment and the box near the battery ?

sounds like might b a main fuse. do u have a kick panel and a box under the hood? sometimes a main relay or fuse will cause many electric things to go out.

use a scanner to reset the CPU as the program is corrupted from the flat battery

there is a regulator for the display brightness, you may have it turn'd down or it has stopped working;. it controls the brightness at which the dash lights are. usually has a speedo sign on it. goes up and down. it works with the main light and is conecter to them on the same lighting board if it has gone then a new light swtch control switch will be needed.

the circuit board on the back of the panel is no good or there may be a loos connection at the plug that connects to it.

Ether way it sound like the battery is low on power. If it is a new battery then it may be the alternator.

Check the fuse for those items that don't work.

1)check the ignition switch is not loose.those things normally come on before starting.unless2) you have a main ground broken somewhere.rodents eat the wiring harness to build a nest and cause mayhem...i have seen that a few times .check the fusebox under the hood on the drivers side

http://www.youtube.com/watch?v=HPvX190txvk

Pull any fuses marked stereo/radio and see if that helps. If insurance is involved, take it where new stereo getting installed & have them do it for you if your stumped.