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3.15 Electrical interface in the T5

The electrical interface offers the opportunity of making certain analogue signals / potentials available for special electrical equipment that would otherwise only be connected via the CAN BUS and thus need considerable time and effort for connection.

The customer advantage is that a wide variety of electrical signals from the function electronics can be detected from a very easily accessible place inside the vehicle. These signals can be used for individual purposes depending on customer requirement.

These signals may only be manipulated by authorised specialist personnel.
Improper intervention can lead to damage on or in the vehicle as well as loss of the operating permit.

It is essential that the following points are observed:

  • Various VDE (Association for Electrical, Electronic & Information Technologies) guidelines for layout and installation of electrical wiring and components (cable cross sections, fuses, etc.)
  • Only components (wiring, housings, contacts) approved by Volkswagen may be used for adaptation to the onboard supply system.
  • Only VW-typical potential designations are to be used
  • Since connected additional devices are unknown, the user of the interface must be assured a regulated current supply
  • It is not know what additional devices will be connected, therefore the user of the interface must guarantee a balanced current system. Order additional battery PR no. 8FB for this purpose.
  • The EMC safety for connecting behind the interface is the responsibility of the user.
  • The wiring diameters of the interfaces are to be adhered to in the complete circuit, i.e. no changes to the diameter after the interface
  • Feeding into the onboard supply system may only be carried out using potentials specifically designed for this purpose and is to be safeguarded externally in accordance with VDE requirements. The reference potential is always the positive potential of the starter battery
  • Additional information can be gleaned from the customer service documents
  • Electrical wiring that has to be interrupted to realise special functions (e.g. brake light deactivation, start inhibitor, etc.) must be protected safely against short circuits to battery + and body earth.

General notes:

  • The potentials indicated relate to the vehicle body earth in all cases. The earth stud in the left seat box is to be used as a preference

Terminal assignment up to model year 2009:

No. Interface for: Potential Terminal designation Max. current draw Max. current feed Wiring cross section Colour
1 Input terminal directly from battery B+ (terminal 30) 30 32.0 A Not permissible 4.0 mm2 Red / yellow
2 Output terminal on ignition switch (drive switch) Terminal 15 15 2.0 A Not permissible 0.5 mm2 Black / blue
3 Output terminal on ignition switch (drive switch) for engine run-on Terminal 15 (engine run-on) 15 20.0 A 25.0 A 2.5 mm2 Black / yellow
4 Output terminal on ignition switch (drive switch) for engine run-on Terminal 75 75 Not permissible 200 mA 2.5 mm2 Black / red
5 Output terminal from X-contact relay XRA XRA* 12.0 A Not permissible 1.5 mm2 Black / yellow
6 Output terminal on glow and ignition switch (drive switch) Terminal 50 50 200 mA Not permissible 0.5 mm2 Black / blue
7 S-contact ignition lock Terminal S S-contact* 2.0 A Not permissible 0.5 mm2 Brown / red
8 Speed signal V V* 20 mA Not permissible 0.35 mm2 White / violet
9 Output terminal on dipped beam switch for dipped beam light (left) Terminal 56b 56b 1.0 A 12.0 A 1.5 mm2 Yellow / black
10 Output terminal on dipped beam switch for dipped beam light (right) Terminal 56b 56b 1.0 A 12.0 A 1.5 mm2 Yellow
11 Output terminal on dipped beam switch for main beam light (left) Terminal 56a 56a 1.0 A 12.0 A 1.5 mm2 White / black
12 Output terminal on dipped beam switch for main beam light (right) Terminal 56a 56a 1.0 A 12.0 A 1.5 mm2 White
13 Terminal for fog light Terminal 55 55 3.0 A 8.0 A 1.0 mm2 White / yellow
14 Turn signal light left Terminal 49a L (49a) 200 mA Not permissible 1.0 mm2 Black / white
15 Turn signal light right Terminal 49a R (49a) 200 mA Not permissible 1.0 mm2 Black / green
16 Output switch on light switch for side light Terminal 58L 58L* 1.0 A Not permissible 0.5 mm2 Grey / black
17 Terminal for dimmable instrument illumination Terminal 58d 58d 2.0 A Not permissible 0.35 mm2 Grey / black
18 Terminal for brake lights Terminal 54 54 200 mA Not permissible 1.5 mm2 Black / red
19 Reversing light RFL RFL* 1.0 A Not permissible 1.0 mm2 Green / black
20 Handbrake Handbrake control --- 10 mA Not permissible 0.35 mm2 Blue / black

Additional information about electrical interface:

  1. Connector assignment of UF1 interface
  2. T5-Technical description of interface for special vehicles
  3. Current flow diagrams of E-interface (please ask for detailed documents from your customer service advisor)

The electrical interface can be ordered for external use under PR no. UF1 for all derivatives of the new Transporter.

Terminal assignment from model year 2010 onwards:

Still in progress!

Please contact us using the contact form on the bodymaker portal before starting your conversion!

Note: Subject to errors and technical amendments. The electronic version of the body guidelines is the decisive source of up-to-date data on body guidelines.July 2010

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