The turnlight signal on my dash is not flashing when I turn it on on 1998 BMW 740i

The outside turn-signal flashes when I turn it on, but the arrow light is not blinking inside the car, on the dashboard indicating that the turn-signal is in use. So I tend to turn it on to change lanes but forget to turn it off time to time because I dont see the light blinking in front of me on the dash, can someone tell me where to look as far as it goes with the electrical spectrum of the problem. Thank you.

Asked by for the 1998 BMW 740i
it sounds like the bulb is blown in the dash you have to take the instrument cluster out and check the bulb
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1 more answer , 1 more comment
does it blink when using the emerg flashers?
the emergency flashers also do not work inside the dash, but everything works perfect outside the car as far as it goes with the back and front lights.