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Hi
The tacho on my 97 tb started waving about wildly at about 4000-6000 rpm if you get my drift. It was replaced under warranty. So in my case must have been a duff tacho.
The replacement one is just starting to move around by about 500 rpm at 5000 rpm. So its a very common problem in my household.
It is very important not to use higher rated backlight bulbs like 5W ones in place of original 2W ones. If you do the plastic insides of the instruments melt. Ive replaced the bulbs with red led's from "ultraleds" they are great and dont blow !
BV
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