Thanks Roger for the Link to the thread, saves time.
I've tried replacing the older bulbs with newer one's. Now I have a lot of light but lots of flash back from the gauge glass, the fuel gauge in particular. The fuel gauge has a blue plastic strip that diffuses the bulb light mounted above it, in my car that strip is missing. Currently, I can't even read the gauge at night. I suppose I have to remove the bulb altogether and replace with a LED. I don't like drilling into the fuel gauge for mounting though.