What to do my instrument panel lights on 2002 chrysler 300m won't go on fuse is good?

Your vehicle has two boxes of fusible links, but none of them magically repair if you disconnect the battery.

Check for DTC trouble codes.
Check the grounds on the negative battery to the body work.
You probably need an auto-electrician.

Fuse Box Diagram Chrysler 300M (1999-2004)

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In this article, you will find fuse box diagrams of Chrysler 300M 1999, 2000, 2001, 2002, 2003 and 2004, get information about the location of the fuse panels ...

If you are not using the original/factory key it won't start. There is a chip in the original. Hope it helps

The Combination Flasher, also refered to as the combo-flasher, is mounted to the in-line bracket which is located to the right of the Junction Block. The Junction Block (JB) is located in the left endcap of the instrument panel. REMOVAL Open hood and disconnect the negative battery cable remote terminal from the remote battery post. Remove the left instrument panel silencer. Refer to Body Instrument Panel Silencer, REMOVAL. The flasher can be removed by pulling in a rearward direction. INSTALLATION Install the flasher by firmly pushing it into place. Install the left instrument panel silencer. Refer to Instrument Panel Silencer, INSTALLATION. Connect the negative battery cable remote terminal to the remote battery post.

It's in what Chrysler calls the "junction block". What normal people call the fuse box. The fuse box is located at the driver's end of the instrument panel. You need to open the driver's door to see and remove the cover plate that hides it.
Charlie

It's located behind the center instrument panel. I also believe that there is a headlamp flash relay there as well so don't get them mixed up. the one you are looking for should have a wiring coming from it. I gave you a picture below of an aftermarket one so you get the idea. I hope that's the problem and not in the wiring itself. I hope this helps and good luck.

Two fuses; #4 & 19. #19 is the changer & #4 is the radio.

there is no specific fuse for the clock, it is part of the instrument panel system, so if the clock is the only thing not working u have a problem with the clock itslef.

check the multiplug connectors

You have a short in the wiring somewhere. have you tried to pull the connectors off the tail light assemblies? pull both then connect them 1 at a time to see which side is causing the problem, could be as simple as a bulb that has shorted it self out.

The Combination Flasher, also refered to as the combo-flasher, is mounted to the in-line bracket which is located to the right of the Junction Block.
The Junction Block (JB) is located in the left endcap of the instrument panel.

REMOVAL

Open hood and disconnect the negative battery cable remote terminal from the remote battery post.
Remove the left instrument panel silencer. Refer to Body Instrument Panel Silencer, REMOVAL.
The flasher can be removed by pulling in a rearward direction.
INSTALLATION

Install the flasher by firmly pushing it into place.
Install the left instrument panel silencer. Refer to Instrument Panel Silencer, INSTALLATION.
Connect the negative battery cable remote terminal to the remote battery post.