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My factory gauge had a similar issue. The ground wire (brown?) was shorting and had to be rigged to connect properly. If you wiggle the plug to the back of the instrument cluster, does it start working?
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The connector pins is where mine problem was. I had bad solder connections between the pins and the flexible (plastic) printed circuit board. On mine, I cleaned off the old solder and apply fresh solder. No more problems. This type of work required experiences working with flexible printed circuit board, otherwise it will melt the board and become junk. This board use lead/tin solder and not the newer stuff. The lead/tin melt at a lower temperature and the new stuff will melt the board when you get it hot enough to melt the solder.