Topic: Noise issue out of the Instrument Cluster 67

[Ralf]

I have a noise problem coming from the instrument cluster. It is a humming (whir) sound which also increases with increasing speed. At a standstill and while driving. Could the constant voltage regulator behind the instrument panel be the problem or something else? All instruments are working fine (temperatur, gas). Have a speedometer/trip odometer and a tachometer.
Great thx for your help.

Ralf

[ruppstang]

I would guess it was the tachometer because it is turning even when stopped.

[Ralf]

Hm, yes, possible. Any idea to solve it?

[midlife]

Jumper the leads from the underdash harness side and see if the noise disappears.  If so, you've isolated it to the tach.  If not, it is something else.