Intermittent loss of dash and interior lights

I just ran through schematics for the courtesy lights and instrumentation lights. They are all on separate grounds, so that isn't an issue. The radio is powered differently. When you say radio, are you referring the the lighting on the radio or the radio itself?

As far as the instrument panel and courtesy lights, the only common component is the panel light control switch that could affect the radio lighting, but not the actual radio.

Let me know.

Joe

I don't see a link between the two. Start with the basics. Check to make sure the battery is fully charged, the terminals are clean and tight, and the alternator is properly charging. With today's vehicles, low voltage can cause all kinds of issues.

Here are a couple links you may find helpful:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

https://www.2carpros.com/articles/car-battery-load-test

https://www.2carpros.com/articles/how-to-check-a-car-alternator

I was always taught to start at the beginning with electrical issues. That's the battery. Do this just to confirm it isn't something simple.

Joe

You are very welcome. Let me know what you find. I'm interested in knowing how the two are tying together.

Take care,
Joe

Happy to help.

Take care,
Joe