I have a 92 SC400 with 107,xxx miles. several years ago, one of the speedo or tach lights went out so I mentioned it to the dealer. He said that when they went bad, their experience was that it was better, while you had the dash apart, to replace all of them. It was about $125.00. They "fixed" my immediate problem by tapping the top of the dash and the light came back on. To this day, a light will occasionaly go out and a tap or sometimes a slap on the das restores it and I have never replaced the bulbs. Just a suggestion if you have that problem.

 

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