Category Archives: Electrical

Adding a DAB/DAB+ aerial to the Volkswagen Golf Mark V & VI, Jetta, Passat and others

Adding a DAB/DAB+ aerial to the Volkswagen Golf Mark V & VI, Jetta, Passat and other models can be achieved in four ways.

  • Glass mounted stick on aerial <coming soon>
    (Surface mounted or external)
  • Using the OEM method of the rear window aerial <coming soon>
  • Roof mounted <coming soon>
    (Replacing the roof mounted aerial)

 

Adding a DAB/DAB+ aerial – DIY

Adding a DAB/DAB+ aerial – DIY is useful if you haven’t decided how to add on DAB/DAB+ support to your vehicle.

See the main article to see the other options – Adding a DAB/DAB+ aerial to the Volkswagen Golf Mark V & VI, Jetta, Passat and others The connector on the rear of the head unit is a Fakra Black Type A plug so a Fakra Black Type A jack (or a universal one) is required on the DIY aerial, see the this article for further information on Fakra connectors – FAKRA (SMB) Connector Information and Specifications.

In this example I’ve used a spare RNS 510 GPS aerial with RJ174 coax, cut off the GPS aerial and removed the Fakra Blue Type C jack housing from around the connector.

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Construction is simple.

1. Strip away the outer insulation and the braided shield from the first 300mm.

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2. Strip away the outer insulation on the next 230mm.

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3. Make a coil after the braided section of 50mm in diameter and secure with some electrical tape or similar.

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4. Add electrical tape or heatshrink to the end of the braided section as shown and the end of the aerial to enable it to be hung up.

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This aerial is best suited to a static environment such as a house but works quite well in a vehicle in various locations such as behind the front seats and the b-pillars.

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Original concept was from here – http://www.audiobritain.co.uk/DAB.html

Adding DAB/DAB+ support to the Volkswagen Golf Mark V & VI, Jetta, Passat and others

Adding DAB+ support to Australian Volkswagen Golf Mark V and VI, Jetta, Passat and other similar models is reasonably straightforward with the introduction of new (albeit difficult and expensive to source) headunits. DAB and DAB+ are available on all models of the DAB RNS 510 headunits and will work in any country with DAB and DAB+.

The version tested to work here in Australia is the 1T0035686C  (1T0 035 686 C) with a Hardware Level of HW:09 and running software level 5238. This unit is a stock RNS 510 with LED screen, 40GB hard drive and is the latest available model from Volkswagen at the time of fitting in late 2013.

There is another version which is the 1T0035686D  (1T0 035 686 D) and the difference between them is that the C version has Western European maps installed and the D version has Eastern European maps. Be aware that the versions of firmware prior to 5238 are buggy.

You will need to fit a suitable DAB/DAB+ aerial to your car to pick up DAB/DAB+ signals, there is a new FAKRA connector on the rear for this signal and the existing aerials are used for FM and AM.

Adding a DAB/DAB+ aerial to the Volkswagen Golf Mark V & VI, Jetta, Passat and others

 

FAKRA (SMB) Connectors, Cables and Adapters

Fakra Cables

Volkswagen sell Fakra cables pre made in various lengths, the connectors fitted to these cables are a Type Z(Neutral Key Code) that works with the majority of Fakra connectors – see FAKRA (SMB) Connector Information and Specifications for further detail. To create an extension lead add the 0.3m Fakra Plug (Male) to Fakra Plug (Male) – 000 098 692 (000098692).

Fakra Jack Female to Fakra Jack Female

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0.3m Fakra cable – 000 098 650 (000098650)
0.5m Fakra cable – 000 098 651 (000098651)
1.0m Fakra cable – 000 098 652 (000098652)
1.5m Fakra cable – 000 098 652A (000098652A)
2.0m Fakra cable – 000 098 653 (000098653)
2.5m Fakra cable – 000 098 653A (000098653A)
3.0m Fakra cable – 000 098 654 (000098654)
3.5m Fakra cable – 000 098 654A (000098654A)
4.0m Fakra cable – 000 098 655  (000098655)
4.5m Fakra cable – 000 098 655A (000098655A)
5.0m Fakra cable – 000 098 656 (000098656)
5.5m Fakra cable – 000 098 656A (00009865Â)
6.0m Fakra cable – 000 098 657 (000098657)
7.0m Fakra cable – 000 098 658 (000098658)

 

Fakra Adapter Cables (300mm)

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Fakra Plug (Male) to BNC (Male) – 000 098 672 (000098672)

 

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Fakra Plug (Male) to FME (Male) – 000 098 678 (000098678)

 

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Fakra Plug (Male) to SMA (Female) – 000 098 686 (000098686)

 

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Fakra Plug (Male) to Fakra Plug (Male) – 000 098 692 (000098692)

 

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Fakra Plug (Male) to FME (Female) – 000 098 693 (000098693)

 

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Fakra Plug (Male) to ISO Radio – 000 098 696 (000098696)

 

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Fakra Plug (Male) to RAKU 2/RAKU II (Male) – 000 098 697 (000098697)
RAKU 2/RAKU II is the standard connector on the AM/FM roof mounted Aerial on the Golf MkV and MkVI.

 

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Fakra Plug (Male) to RAST 2/RAST II (Female)- 000 098 698 (000098698)
The RAST 2/RAST II is the matching female connector for the RAKU 2/RAKU II.

 

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Fakra Plug (Male) to SMB (female) – 000 098 700 (000098700)

 

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Fakra Plug (Male) to Fakra Jack (Female) – 000 098 703 (000098703)

FAKRA (SMB) Connector Information and Specifications

FAKRA Connectors are designed for automotive applications and are based on the SMB connector interface and comply with the standard for a uniform connector system established by FAKRA (FACHARBEITSKREIS AUTOMOBIL – German group of experts from vehicle manufacturers and equipment suppliers). Due to their special standard locking system FAKRA connectors fulfill the high functional and safety requirements of today’s automotive industry and are specified for 6 GHz in 50 omh or 60 ohm. These connectors are commonly used in GPS antenna, Engine management system, Analog/Digital radio, Auxiliary heating, TV/Video-displays, Antenna, Distributor box, Accident data analysis, Mobile phone, Remote control keyless entry, Distance control, Air pressure control, and Navigation systems.

The connectors are equipped with a standardized coding system which permits easy and fast assembly using fourteen possible coding options. The locking system has primary and secondary locking to prevent inadvertent detachment.

The FAKRA standard is described today in the DIN 72594-1 / ISO 20860-1 and harmonized with the USCAR-17 standard and the goal is to transfer the DIN and USCAR standard into an international ISO standard. USCAR-17 is meanwhile replaced by ISO 20860-1 and the same will happen with DIN 72594-1.

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  1. Sophisticated mechanical and color coded system with 14 different codes
  2. Continuous strip mounted, stamped and formed center contacts ensure efficient automatic assembly
  3. High mounting security:
    1. Pre-assembling locking features ensures correct position of the coaxial insert in the coded housing
    2. Secondary locking feature prevents incorrect mating
    3. Secure primary locking system between plug and jack with tactile and audible locking mechanism
    4. Protection frame and protection strip protect against accidental demating
  4. Coaxial insert and cable can be rotated freely 360° in coded housing
  5. Secure secondary locking with high axial retention force of the coaxial insert in the coded housing
  6. Shock and vibration proof housing protects coaxial insert
  7. Cable types with fixing groove for chassis mounting
  8. Special shape of inner contact ensures tilt resistant PCB mounting

 

volkswagen_fakra_plug_dimensionsFAKRA Plug (male)

  • Snap-on coupling
  • Plastic housing covered (14 color options)
  • Six slots radically spaced outer contact inside shell
  • Female center contact
  • Insulator surrounds female center contact wholly for 50 ohm
  • An air gap between female center contact and outer contact for 75 ohm Fakra male

 

 

FAKRA Jack (female)volkswagen_fakra_jack_dimensions

  • Snap-on coupling
  • Plastic housing covered (14 color options)
  • A trough for mating captive after a smooth area of dia. 3.7mm, 3.0mm length from mating end
  • Male center contact
  • Insulator nestles up throughout against outer contact. An air gap between insulator and male center contact for 50 ohm Fakra female
  • Reducing insulator amount. An air gap between male center contact and outer contact for 75 ohm Fakra connector

Plug and Jack Keying Options

Plug Keying Options

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Jack Keying Options

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Mechanical and Colour Coding

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Commonly used Volkswagen Fakra connectors

A-Black – DAB/DAB+(RNS310 DAB/RNS510 DAB)

B-White – DAB/DAB+ with active power

C-Blue – GPS (RNS2-MFD2/RNS510-MFD3/Skoda Columbus/Audi RNS-E/Audi MMI)

Further information on Connectors, Cables and Adapters can be found in this post – FAKRA (SMB) Connectors, Cables and Adapters

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.

 

 

 

 
Wires
Wires are stranded conductors ranging in size from 0.35 mm2 to 6.0 mm2 (approximately 22 to 9 gage (AWG)) that
make up most of a vehicle’s wiring harness. Smaller sizes save cost and weight. The larger sizes accommodate higher current loads with less resistance.

Wire larger than 6 mm2 (0 gage (AWG) is generally considered “cable.”

Wire size
Wire size (cross-sectional area) is the primary factor that will determine the current-carrying capacity of a conductor. Standard sizes differ slightly, depending on which measuring standard is used.

Volkswagen uses wire and cable that is manufactured according to the German industrial or “DIN” standards. Wire size is defined by cross-sectional area, and is measured in circular mils (mm2). As in the example shown, “0.75 mm” refers to the area (0.75 mm2), not the diameter.

Sizes of wire and cable originating in North America are described according to the American Wire Gage (AWG) standard. The standard wire sizes in both systems are roughly equivalent.

Aerial Information for Volkswagen Golf Mark VI

General notes

For radio and radio navigation systems without diversity function, the aerial system consists of a window aerial in the rear window with an aerial module.
For radio and radio navigation systems with diversity function, the aerial system consists of a window aerial in the rear window with two aerial modules.
Golf saloon: for the optional reception of “DAB”, digital radio reception, the window aerial in the rear window is equipped with a special aerial module.
Golf Plus: for the optional reception of “DAB”, digital radio reception, the window aerial in the rear window is equipped with a special aerial module.
For equipment with navigation, telephone or auxiliary heater remote control, an appropriated roof aerial is installed.
The aerial system with diversity function optimises and improves reception in the vehicle.
Diversity functions are directly executed in the radio unit or radio navigation system. No additional aerial selection control unit is installed in the vehicle.

Overview of basic aerial system without diversity function

1 –  Mobile telephone -R54-
  • Optional
2 –  Aerial -R66-
  • Roof-mounted
  • Only installed with following equipments as telephone, navigation system or auxiliary heater with remote control.
3 –  Right aerial module -R109-
  • For FM/AM reception
  • Impedance converter
4 –  Radio -R-
  • RCD 210
5 –  Frequency modulation (FM) frequency filter in negative wire -R178-
  • Has the task of preventing the aerial signals being shorted to earth
6 –  Amplitude modulation (AM) frequency filter -R177-
  • Has the task of preventing the aerial signals being shorted to earth
7 –  Frequency modulation (FM) frequency filter in positive wire -R179-
  • Has the task of preventing the aerial signals being shorted to earth
8 –  Rear window aerial -R130-

Overview of aerial system with diversity function and navigation system (depending on radio unit or radio navigation system)

1 –  Mobile telephone -R54-
  • Optional
2 –  Aerial -R66-
  • Roof-mounted
  • Only installed with relevant equipments as telephone, navigation system or auxiliary heater with remote control
3 –  Left aerial module -R108-
  • For FM reception
  • Diversity aerial FM 2
  • Impedance converter
4 –  Right aerial module -R109-
  • For FM/AM reception
  • Diversity aerial AM/FM 1
  • Impedance converter
5 –  Radio -R- or control unit with display for radio and navigation system -J503-
  • RNS 310
6 –  Frequency modulation (FM) frequency filter in negative wire -R178-
  • Has the task of preventing the aerial signals being shorted to earth
7 –  Amplitude modulation (AM) frequency filter -R177-
  • Has the task of preventing the aerial signals being shorted to earth
8 –  Frequency modulation (FM) frequency filter in positive wire -R179-
  • Has the task of preventing the aerial signals being shorted to earth
9 –  Rear window aerial -R130-

Overview of aerial system with diversity function, DAB radio reception and navigation system (depending on radio unit or radio navigation system), Golf saloon

1 –  Mobile telephone -R54-
  • Optional
2 –  Aerial -R66-
  • Roof-mounted
  • Only installed with relevant equipments as telephone, navigation system or auxiliary heater with remote control
3 –  Left aerial module -R108-
  • For FM reception
  • Diversity aerial FM 2
  • Impedance converter
4 –  Aerial wire for optional “DAB” radio reception
5 –  Right aerial module -R109-
  • For FM/AM reception
  • Diversity aerial AM/FM 1
  • Impedance converter
6 –  Radio -R- or control unit with display for radio and navigation system -J503-
  • RCD 310
  • RCD 510
  • RNS 510
7 –  Frequency modulation (FM) frequency filter in negative wire -R178-
  • Has the task of preventing the aerial signals being shorted to earth
8 –  Amplitude modulation (AM) frequency filter -R177-
  • Has the task of preventing the aerial signals being shorted to earth
9 –  Frequency modulation (FM) frequency filter in positive wire -R179-
  • Has the task of preventing the aerial signals being shorted to earth
10 –  Rear window aerial -R130-

Overview of aerial system with diversity function, DAB radio reception and navigation, Golf Plus

1 –  Mobile telephone -R54-
  • Optional
2 –  Aerial -R66- without DAB radio reception
  • Roof-mounted
  • Only installed with relevant equipments as telephone, navigation system or auxiliary heater with remote control
3 –  Aerial -R66- with DAB radio reception
  • Roof-mounted
  • Only installed with relevant equipments as telephone, navigation system, DAB radio reception or auxiliary heater with remote control
4 –  Left aerial module -R108-
  • For FM reception
  • Diversity aerial FM 2
  • Impedance converter
5 –  Aerial wire for optional “DAB” radio reception
6 –  Right aerial module -R109-
  • For FM/AM reception
  • Diversity aerial AM/FM 1
  • Impedance converter
7 –  Radio -R- or control unit with display for radio and navigation system -J503-
  • RCD 310
  • RCD 510
  • RNS 510
8 –  Frequency modulation (FM) frequency filter in negative wire -R178-
  • Has the task of preventing the aerial signals being shorted to earth
9 –  Amplitude modulation (AM) frequency filter -R177-
  • Has the task of preventing the aerial signals being shorted to earth
10 –  Frequency modulation (FM) frequency filter in positive wire -R179-
  • Has the task of preventing the aerial signals being shorted to earth
11 –  Rear window aerial -R130-

Overview of fitting location of components for rear window aerial

1 –  Frequency modulation (FM) frequency filter in negative wire -R178-
  • Has the task of preventing the aerial signals being shorted to earth
2 –  Amplitude modulation (AM) frequency filter -R177-
  • Has the task of preventing the aerial signals being shorted to earth
3 –  Frequency modulation (FM) frequency filter in positive wire -R179-
  • Has the task of preventing the aerial signals being shorted to earth
4 –  Right aerial module -R109-
  • For FM/AM reception
  • Diversity aerial FM 1
  • Optionally also DAB digital radio reception possible
  • Aerial amplifier, impedance converter
5 –  Left aerial module -R108-
  • For FM reception
  • Diversity aerial FM 2
  • Aerial amplifier, impedance converter
6 –  Rear window aerial -R130-

Inside the Volkswagen / Skoda Bluetooth Car Kit

Inside the Volkswagen / Skoda Bluetooth Car Kit

The bluetooth car kit is built around a TDA7590 a high performances, fully programmable 24-bit, 120 MIPS. Digital signal processor (DSP), designed to support several speech and audio applications, as automatic speech recognition, speech synthesis, MP3 decoding, echo and noise cancellation.

Nevertheless, the embedded CODE Cs bandwidth and the generic processing engine allow to proceed also full-band audio signals. The large amount of on-chip memory (128 Kwords), together with the 16 Mwords external memory addressable and the 32 general purpose I/O pins permit to build a DSP-system avoiding the usage of an additional microcontroller.

The presence of serial and parallel interfaces allows easy connection with external devices including CODECs, DSPs, microprocessors and personal computers.

In particular, the debug/JTAG interface permits the on-chip emulation of the firmware developed. Further, the presence of the timers and watchdog block makes TDA7590 suitable for PWM processing and allows the integration of a system watchdog.

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Installing a GPS aerial inside the dash of the Volkswagen Golf and Jetta

When retrofitting a satellite navigation head unit to the car you can either install the factory GPS antenna on the roof which is a fairly large job or install the GPS aerial (antenna) in the area above the head unit where it receives a good view of the sky and minimal interference.

Remove the dash vent (or tray on non Climatronic units) by following this guide.

Volkswagen Golf Dash Panel Centre Vents – Removal and Installation

If you need to remove the head unit remove the trim around the head unit using this guide.

Volkswagen Golf Centre Dash Panel Trim – Removal and Installation

Remove the head unit by unscrewing the 4 screws and carefully sliding it out, watch out when the unit is released as it could drop and scratch the climatronic.

Using double sided tape stick the GPS aerial in the location shown and press down, wedge some foam on top and tape the GPS wires down to prevent them interfering with the diffuser vent (for cars fitted with climatronic). The photos show two GPS aerials installed side by side and there is room for two more.

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Adding switches to the blank switch covers in the centre console of the Volkswagen Golf and Jetta

Installing switches in the center console to utilise the blank spaces either requires purchasing the optional switch for that location from Volkswagen however these are a momentary switch, have different markings on them (W for example) and connectors for the switch are not readily available or fitting an aftermarket switch which looks out of place. This guide uses an off the shelf switch and no-one would know the switch is there unless they press the button. Whilst this guide is performed on a Golf Mark V the same blanks are used in the Golf Mark VI so the same switch can be used and the same principles can be applied to any other car with a similar setup.

As an alternative there is a company called CarStyle4You that sells buttons with different engraving that match the OEM buttons and they also sell suitable oem switches. See the end of this guide for their details and a few sample photos.

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(left: switches are both up, right: first switch is down)

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(left: both switches down, right: second switch is down)

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(left: both switches up, right: both switches down)

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(left: both switches down, right: both switches up)

The switch used here is a latching switch but momentary is also available. The switch illumination can be used but as the ends are removed you will get white light spilling out the sides so upgrading the internal light to a coloured LED gives a nice glow around the switch.

The switch used to be available from RadioShack in the US but they don’t seem to carry them anymore.

Jaycar (Australia and overseas)

SP-0742 Red
SP-0750 Red Momentary
SP-0752 Green
SP-0753 Green Momentary

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volkswagen_golf_switch_installation_03 volkswagen_golf_switch_installation_04

To allow the blank to fit and move freely the two sides of the switch around the cover of the switch must be removed, not that the base width must not be altered as it’s a perfect width for the centre console.

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Switch Blanks (Blind Covers)

Golf Mark V and VI

  • 1K0 959 623 C 3X1 (1K0959623C 3X1) – Passenger & Drivers Side
  • 1K0 959 623 D 3X1 (1K0959623D 3X1) – Middle

volkswagen_golf_switch_installation_09_switch_blank volkswagen_golf_switch_installation_10_switch_blank

volkswagen_golf_switch_installation_11_switch_blank volkswagen_golf_switch_installation_12_switch_blank

Remove the plastic in the switch as shown and roughen the surface on the bottom of the switch in preparation for gluing.

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Perform a test fitting of the switch and the switch blank to make sure it all fits together. Glue the cover from the switch and the switch blank together, roughen the surface of the switch cover and use a two part epoxy (5 min araldite or similar).

volkswagen_golf_switch_installation_17_switch_blank_fittingvolkswagen_golf_switch_installation_18_switch_blank_fitting volkswagen_golf_switch_installation_19_switch_blank_fitting

Clip the switch and the switch blank together and test the operation.

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The finished switches ready for fitting to the centre console. When soldering the wire on keep the connections tight as the retaining nut has to fit over the soldered connections.

volkswagen_golf_switch_installation_24_finished_product volkswagen_golf_switch_installation_25_finished_product

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Fit the switches and align them on the front (there is limited adjustment) and screw the retaining nut down tight. Once aligned use some two part epoxy (araldite or similar) to lock it tight and prevent the retaining nut from working it’s way loose. The wires have been taped up using Fabric Adhesive Tape for wiring looms and harnesses and connectors fitted around 300mm down to allow easy removal of the central console.

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CarStyle4You sell suitable engraved blanks and switches that match the OEM ones and can be illuminated. I may organise a few of these switches and post a separate guide/review as the quality looks top notch and well worth the money.

volkswagen_golf_switch_installation_carstyle4you_light_on_off volkswagen_golf_switch_installation_carstyle4you_vw_garage_open volkswagen_golf_switch_installation_carstyle4you_pursuit_mode

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