Yeah, Karr had the dash, but that's because in these scenes it was the model they used for Kitt. So in these scenes the model had Kitt's voicebox (look at the red light when Tony speaks to Karr), but it wasn't shown directly.
You never see Karr's voicebox built into the dash.
Oh, and Karr's voicebox is nearly identical to Kitt's second season voicebox.
Sorry to say that, but it's definitely not like Kitt's third/fourth season voicebox.
Karr's 3rd season:
Kitt's 2nd season:
and Kitt's 3rd/4th season:
and to make it complete karr's first season:
And if you count the LEDs 2nd season Kitt and 1st/3rd Karr have 16 each row, while 3rd/4th season Kitt has 18, that's why the voicebox looks longer. It actually is longer.