Dash backlighting on gauges not working

I currently have the radio removed too. Could this have something to do with it? I just read that these lights are grounded through the radio ground.

What I looked at was instrument cluster illumination. in the diagram, the orange wire with yellow tracer is voltage, comes from the bcm.

The black wire with orange tracer is a constant chassis ground. One way to check a chassis ground, is to use a test lite connected to battery voltage, The other end of test lite, touch the terminal for the black wire with orange tracer, if the lite comes on bright, the ground is good.

Can you check bcm trouble codes? Some of the national brand auto stores will check codes for free.

There are other circuits that use the same ground, but, they are wired in parallel, not sure I spelled that correctly. Your radio shouldn't be a problem as far as ground.

I didn't notice any bcm codes for this issue. You may need to replace the printed circuitry for the instrument cluster?

Thank you for your response. I haven't had it put on a computer yet. All the gauges and other lights that temporarily light at startup on the dash are working fine. When I turn the headlights on at night, the dash is completely dark except for the odometer and PRNDL. Not sure if it's electrical or as simple as a bulb.

Thank you for your response. I haven't had it put on a computer yet. All the gauges and other lights that temporarily light at startup on the dash are working fine. When I turn the headlights on at night, the dash is completely dark except for the odometer and PRNDL. Not sure if it's electrical or as simple as a bulb. Are the bulbs labelled as my Haynes manual doesn't provide me with which bulb is which?

Did you check illumination voltage and ground? Note the wire colors in diagram. Hopefully I didn't misunderstand anything in your post?