Peter, thanks for the answer and please let me know re: the illumination of the center stuff. I know about the dimmer adjustment; I removed the rheostat and just jumpered it so it is always on max illumination. But the problem with the stuff in the center not lighting up predated that.

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2005 Mercedes C230k sport sedan, 6 speed
1987 Porsche 924S - 968-engined track car