While I was dissasembling interiors of my old VW Jetta to paint the body, I stumbled across quite an interesting cable, close to the left upper corner of a front glass that just ends.

Here are a few photos: enter image description here

enter image description here

Does anyone know what is it?

  • Perhaps a (possibly coaxial) cable that ran from the dash area up to a radio antenna, located above the middle of the rear glass. Commented Oct 9, 2023 at 19:15
  • Two interesting cables – neither is original fit. My guess is that it may have been a taxi in its former life, which may have had two extra radios: CB to talk to other drivers and operator's radio for jobs. Commented Oct 9, 2023 at 19:20
  • ... and with cell phone tech that's all gone to the wind... they use an app for job bookings, and Whatsapp for driver chat. Commented Oct 9, 2023 at 19:30

2 Answers 2


This here:


Leads me to believe it's NOT original. No auto manufacturer would run a wire or tube "naked" across a sharp sheet metal edge like this. It's a failure just waiting to happen.

My guess is that the previous owner added a wire to power a radar detector or dashcam and this is all that remains of it since they cut the end off.

  • 1
    I thought the OP was asking about the brown cable, the one that "just ends" in the photo. You're right about the black one...no manufacturer would route a cable in that fashion. Commented Oct 9, 2023 at 19:19
  • Or a CB radio aerial. Commented Oct 9, 2023 at 19:19
  • @DavidRecallsMonica I didn't even notice the brown one since the black one is so obvious. But I think the answer is the same for either of them, something added aftermarket that is no longer installed.
    – jwh20
    Commented Oct 9, 2023 at 19:27
  • Unlike the black one (with which I agree with you), the brown one does look factory installed, though it terminates rather weirdly. I believe the brown one is what the OP is asking about, too. Commented Oct 9, 2023 at 20:20

I'm going to go out on a limb here and suggest the brown wire/tube is the aerial for your radio. Since it terminates weirdly, appears factory installed, and I'm not seeing a separate aerial on pictures I've looked at, that's what's leading me to believe it's what it is.

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