Hello I have a problem. I bought an Audi 100 C4 from 1991. 2.3 AAR gas engine. The clocks (on the mainboard) are as follows: fuel level indicator, coolant temperature, tachometer and external temperature display. Additional 3 indicators are the watch, oil temperature, oil pressure. After a short time it turned out that the coolant temperature indicator and fuel level indicator are not working. What's worse, the fuel level indicator was glued (!) to the MAX point. I tried to replace the gauges but the temperature gauge was not working, it still does not rise. As for the fuel gauge, it burned right away, I think the motherboard burned it. I have to replace the motherboard or the clocks. Will the clocks from Audi C4 A6 fit? If there is a voltmeter in the auxiliary clocks, will it work? Will they fit from 2.6 or 2.8 gas or 2.5 diesel engines?