It is possibile to replace the damaged instrument cluster speedometer cable with ones supplied by Minitools., Model: Passat (B3 / B4) (from 1988 to 1997)
VCDS ALH Engine Series TDI Adaptions | PDF | Throttle | Propulsion
VW Golf 4 instrument cluster pinout - YouTube
Original Quality 40pin Car Control Module Instrument Cluster Harness Plug With 15cm Wire For Toyota 90980-12169 - Cables, Adapters & Sockets - AliExpress