Dash lights do not work. Probably a relay switch according to your other questions, but where are the relay switches located under the hood?
Dash lights not working, probably a relay switch? on 2003 Chrysler Town & Country
I don't think there's a relay involved in the dash illumination. The dash illumination is powered by orn/wht wire at terminal 1 of dash cluster connector, and grounded by blk/lt.grn at terminal 7 of same connector. Check for 12 volts at term. 1 with the lights on, and for good ground at terminal 7. If terminal 1 has no power, check wiring between dash terminal 1 (orn/wht) and terminal 12 (orn/wht) of Body Control Module behind left side of dash. If there's no power there, suspect the BCM. The dash lights are powered by the BCM and grounded at the Term 7 wire which goes to ground at the right side of the dash. I think most likely cause is faulty ground at cluster terminal 7. Better check the condition of the illumination lamps before you get too far into tearing things apart. The bulbs do not last forever.