I bought a "new" used instrument panel, because my original one threw a code for faulty instrument panel. Does anyone know if the mileage is saved in the digital odometer itself, or does the vehicle computer tell it what to display?

It's not a serious issue since the new one had 97k on it and my car has 124k, but I would prefer to have it accurate. I didn't find any conclusive threads, so if anyone can help or point me in the right direction that'd be great.

Also - does anyone know of the best place to get chrome instrument cluster rings? I figure since I'm in there.....