Chrysler Repair: Instrument cluster lights not working, gas gauge, market radio

Question
Hello, I have a 06 Town & Country LX with no instrument cluster lights. The lights in question are as follows and DO NOT light up at night. All of the instrument lights, speed, gas gauge, etc. Also the heater/ac settings (knobs) DO NOT light up at night. My windshield wipers work, radio lights work, rear defrost indicator works, overhead map lights work, interior light on roof towards the back works, head lights work and turn signals work. All my lights needed work night driving worked until I installed a after market radio. I was careful not to disturb and wiring, I didn't have to cut any wires in the van, I used a after market plug system for installing the new radio so everything was plug-in-play. I don't understand why I could have done wrong. I even disconnected the battery while I was working on the radio. Any suggestions? I was wondering if it could just be the cluster bulb needs replaced???  I also checked all my fuses. Thanks in advance.

Answer
easy thing first  make sure the dimmer switch is not all the way down

if not taken care of  remove the radio chk connections and wiring to the radio.
There is no fuse for the lights  its from the computer  so if u did something wrong  U nuked the body computer.