Antenna cable

Hi,
Radio reception is bad. The plug that goes into the radio is broken. I need either a new plug or, even better, a new cable from antenna to the radio. However, I cannot find where the cable is attached to the antenna. Is it even possible to put a new cable in? Any advice would be helpful.

Henk

To be honest you'd be better fitting a new areial as it's a real pain replacing the OE as it runs under the passenger chair under the carpet and up inside the rear quarter.
A motor factors could supply one that sticks to the front screen, cable would run down the passenger A-pillar across to the stereo, you'd probably get better reception as well,

Don't you need just one of these to replace the broken plug? Replacing the whole coax is a bit extreme!
https://www.amazon.co.uk/Radio-Aerial-Antenna-Plug-electrosmart%C2%AE/dp/B0035KLCHW