Volkswagen wire and cable specifications

An automotive wiring harness employs wires and cables. Each is made up of at least seven conductor strands (A), and covered with an insulating material (B).

Within Volkswagen, wire and cable are classified in three general categories, and then specified according to size, type of insulation, and color.


CAN bus gateway removing, installing and upgrading - Volkswagen Golf

The role of the Gateway (also known as the Data bus diagnostic interface J533) is the exchange of data between the CAN data bus systems (‘powertrain CAN data bus’, ‘convenience CAN data bus’ and ‘infotainment CAN data bus’) and the conversion of diagnostic data from CAN data bus systems to K-cable and vice versa so […]

Volkswagen Central Electronics Control Module (CECM)

The Central Electronics Control Module (CECM) is situated above the pedals on the drivers side and controls all the lights in the car, monitors them, controls what appears in the MFD under the lights menu, controls the leaving home and coming home lights function, controls the horn(s) and other features. There are different variants of […]

Build harness using connector housings and repair wires for Volkswagen Skoda Bluetooth Install

Whilst this guide is intended for the Volkswagen Skoda Bluetooth kit harness it applies to anything that requires interfacing to the quad lock connector on the rear of the head unit or that uses similar connectors around the car. This guide specifically for 2 x power connections and 2 x data connections.

The way this […]

Upgrading 2nd generation radios (RCD 300, RCD 500) to 3rd generation (RCD 210, RCD 310, RNS 310, RCD 510) power drain issue

VAG 1K0907530S CAN bus gateway

Early build Volkswagen cars can experience a power drain issue after upgrading their 2nd generation headunit from a RCD 300 or RCD 500 to a 3rd generation headunit like the RCD 210, RCD 310, RNS 310 and RCD 510.

The problem is the CAN bus Gateway is too […]

Performing repairs on CAN bus wiring

An unshielded two-wire line (1) and (2) with a cross section of 0.35 mm² or 0.5 mm² is used for CAN bus wiring.

The colour codes of the CAN bus wiring are:

Powertrain CAN high wire Orange/black Convenience CAN high wire Orange/green Infotainment CAN high Orange/violet CAN low wire, (all) Orange/brown

Repairs to CAN bus […]