Upgrading your Volkswagen or Skoda head unit from older ISO-type stereos to modern Quadlock-based units like the RCD330, RCD340, RCD360 or RCD510 is now simple and warranty-safe with this TecUpdater ISO to Quadlock CANBUS Adapter Harness.

Designed for perfect OEM fitment, this adapter converts the existing ISO connector in your car to the Quadlock (Fakra) system used in newer Volkswagen and Skoda stereos.

Why You Need It

Many VW and Skoda cars—especially early Polo, Vento, Ameo, Laura, Rapid, Jetta, and Passat—were shipped with older ISO-based connectors. Modern infotainment units such as RCD330G Plus, RCD340, and RCD510 require a Quadlock interface with CANBUS lines for full functionality (steering controls, illumination, and ignition sensing).

This harness ensures a clean, reversible installation:

• No wire splicing or soldering

• Retains factory power, CAN, and speaker channels

• Maintains steering wheel control & illumination data (where applicable)

Key Features

• ISO Male to Quadlock Female conversion harness

• Supports RCD310, RCD315, RCD320, RCD330, RCD340, RCD360, RCD510

• Compatible with most Volkswagen and Skoda PQ-platform cars

• High-grade automotive copper wires for durability

• CANBUS communication lines built-in

• 100% plug-and-play, no coding or error risk

• Maintains OEM quality and warranty integrity

Vehicle Compatibility

• Volkswagen: Polo, Vento, Ameo, Jetta, Passat

• Skoda: Rapid, Laura, Octavia (PQ), Fabia, Yeti

Supports cars using ISO connectors that are being upgraded to any of the above RCD / MIB-style head units.

Installation Notes

1. Unplug the existing ISO connectors from your car’s factory stereo.

2. Connect them to the adapter’s ISO male plugs.

3. Insert the adapter’s Quadlock female connector into your new stereo unit.

4. Mount and test — no cutting or soldering needed.

This preserves your OEM wiring and is completely reversible.

Benefits

• Safe and reversible stereo upgrade

• Preserves warranty and electrical safety

• Supports CANBUS functions (illumination, ignition, mute, etc.)

• Enables use of OEM RCD or MIB head units in older PQ cars

• Clean OEM appearance inside the dashboard

FAQ

Q1: Will this work with the RCD330 Plus or RCD340 head units?

Yes, this harness is fully compatible with all RCD series units including 310, 315, 320, 330, 340, 360, and 510.

Q2: Do I need a separate CANBUS adapter?

No. The built-in wiring passes all necessary CAN signals. Additional decoders are not required.

Q3: Does it affect warranty?

No. Since no wires are cut or modified, vehicle warranty remains intact.

Q4: Is it compatible with Polo and Vento Highline variants?

Yes. All PQ-platform VW/Skoda cars using ISO connectors can be upgraded easily using this adapter.