I have a problem with the Instrument cluster in my 1991 Audi 100 (non-quatro). When the lights are on, both turn signal indicators are illuminated. Turning either the turn signal or the emergency flashers at this time causes both signal indicators to flash as well as the high beam indicator and intermittantly the clock. I have replaced the voltage regulator, and later the entire instrument cluster. Any suggestions as to what to do to rectify this problem. Thanks in advance for any help.