part no: bw-031-13u electric wiring kit for towbars / 13-pin / 12 … 3seri… · 3:3 note: it may...

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BMW

3-series G20 Limousine 03/2019 >>3-series G21 Touring 09/2019 >>

Part No: BW-031-13U

This electric kit has to be installed by a professional workshop or a suitable qualified person.The installation instructions must have been read and fully understood before the start of any installation. Please contact your wiring kit provider or the hotline shown in the footer should you need assistance!Make sure the vehicle is approved/homologated by the manufacturer to tow a trailer! Also please check that there is a definite compatibility between this vehicle and the electric kit!Following the installation of the electric kit, the fitting instructions should be kept together with the vehicle service document and vehicle handbook. The fitting instructions contain important information relating to the use and function of the towing kit as well as for any diagnostic or activation process, that might have to be repeated in the future (e.g. after the performance of a vehicle software update).All warranty claims will be forfeited if the electric kit or components contained therein are used incorrectly or modified. If a towing socket adaptor has been used to connect to the trailer or bike rack, this must be removed from the trailer socket once the trailer or bike rack has been disconnected.If the trailer or bike rack is not equipped with a rear fog lamp, depending on the towing vehicle type, the correct function of the towing kit cannot be guaranteed. In such cases, a rear fog lamp should be retro fitted.This towing electric kit will not be covered under warranty if any technical or electrical modifications or software updates have been performed by the vehicle manufacturer after the initial commissioning of the kit. That applies especially to modifications or updates which may cause malfunctions in the trailer socket or any other part of the trailer electrical equipment!Depending on the type of trailer module used in this electric kit, diagnostic interrogation with the vehicle’s electrical system may be limited or will not function. The error memory inside the trailer module may not be able to be accessed by vehicle manufacturers diagnostic system.Error logs relating to the trailer electrical equipment, that may be generated in the vehicle manufacturers diagnostic system as a result of a test procedure, may be due to the incorrect installation of the towing electric kit or the false activation of the trailer module.We always recommend whenever possible, the following troubleshooting process:

An analysis of the vehicle’s error memory and possibly clearing of all faults before the start of the installation!

Try disconnecting the trailer module from the towing harness and re-start the fault clearing process!

If in doubt, limit the time for troubleshooting to a max of 0,5 hours and call our Technical Support Team!

Please follow our instructions carefully and always test the towing electrics using a true lighting board or a specifically designed bulb tester. If an LED tester is used, ensure it is equipped with correct load resistors or malfunctions will occur! This instruction is subject to changes and we reserve the right to make changes to design, colour etc. All of the data and illustrations may not be an exact representation but the text contained in this instruction must be observed!

Electric wiring kit for towbars / 13-pin / 12 Volt / ISO 11446

Revision: 2 / 15.01.2021BW-031-13U

ECS Electronics UK20 Speedwell Close

Chester, CH3 6DX

Email-sales: [email protected]: [email protected]

SALE: +44 (0) 7590 564639TECHNICAL: +44 (0) 7440 202052WEB: www.ecs-electronicsuk.co.uk

[email protected]

www.ecs-electronicsuk.co.u

k

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26-29

54 STOPR

Option 2

Option 3

Option 1

E D

G

T1T2

R1

XM

AB

54 STOPR

C

U2

U1

5x

3x3x

2x

3x 3x

10x 4x4x

20 Amp.minifuse

20 Amp.

15 Amp.minifuse

15 Amp. 1x

2x

5 Amp.minifuse

5 Amp. 1x

4x

11-15

31-35

16-24

R

M

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Chester, CH3 6DX



Part No: **-***-***

*/**

Electric wiring kit for towbars / **-pin / 12 Volt / ISO *****






******** **/**** >>

************

[email protected]


k

Revision: * / **.**.******-***-***


Chester, CH3 6DX



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SYMBOL EXPLANATION

TOOLS

Left (58-L) respectivelyRight (58-R) tail light

Stop light (54) / high mounted, third stop light (54)

Turn signal indicator left

Turn signal indicator right

Rear fog light(s)

Reversing light(s)

Trailer / trailer recognition

Permanent current power supply

Ground or Earth (31)

Ground connection battery terminal lug

Permanent power supply / 13pin socket, chamber 9

Charging wire for trailer battery / 13pin socket, chamber 10

+

15+

+

30+

Positive connection battery terminal lug

54 STOP

L

R

Reverse

B+/30

Fuse / fuse capacity 20 Ampère

Cigarette lighter /accessory socket

Loudspeaker / buzzer

Park Distance Control

Switch / source of function

Connect together

Disconnect

Look at / See further information

Look carefully at selected area

Present / Occupied / OK

Not present / Not occupied / Not OK

Acoustic indication

Attention / important advice

20 Amp.

20 Amp.

12V

ATTENTION! In order to avoid mal-functions and damage to the vehicle’s electrical system the earth terminal must be disconnected from the vehicle’s battery before starting work!

Both the trailer module and the vehicle’s control unit for the electrical system can be damaged during workon the data bus connections if the battery is not disconnected!

Please pay attention to the manufacturer’s instructions when disconnecting and reconnecting the vehicle’s battery!

!Code

3:3

Note: It may be necessaryto check if this vehicle hasa stored radio code beforedisconnecting the battery!

1

ATTENTION! The vehicle's cooling capacity may have to be increased when retrofitting a trailer coupling!You must observe the manufacturer's instructions!!

Co

Co

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Chester, CH3 6DX



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2

3

1

2

6

7

4

5

Limousine

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Chester, CH3 6DX



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4

3

1

2

3

5

6

4

Option 1

SEAL WITH SILICONE.

X

2

3

1

ø 24mm

12

3

INFO

ø 40mm

X

1

2

Limousine

Limousine

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Chester, CH3 6DX



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5

Option 2

SEAL WITH SILICONE.

X

2

3

1

INFO

ø 40mm

X

Limousine

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Chester, CH3 6DX



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6

INFO

ø 25mm

X

Option 3

SEAL WITH SILICONE.

X

23

1

Limousine

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7

Touring

1

2

34

5

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Chester, CH3 6DX



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8

Touring

1

2

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Chester, CH3 6DX



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10

9

Touring

Touring

12

3

4

5

SEAL WITH SILICONE.

X

23

1

INFO

ø 25mm

X

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Chester, CH3 6DX



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15

12

13

14

X

X

X

Option 1 Option 2

Option 3

Option 1

X

11

Option 2 1 2 3 4

Option 3 2 3 41

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Chester, CH3 6DX



Page 26SOCKET CONNECTION

12/26

16

17

M

M

M

1 2 3

4

10 mm1

2G

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Chester, CH3 6DX



M

13/26

M

18

20

A

AR

Black/Green

Grey Grey

A

R

R

1

3

2

4

Touring

Limousine

19

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Chester, CH3 6DX



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22

B

B

54 STOP

54 STOP

Blue/Red

B

54 STOP

Grey/Green Grey/Green

1

3

2

4

B

B

54 STOP

54 STOP

Blue/Red

B

54 STOP

Black Black

1

3

2

4

21

Limousine

Touring

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23

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Chester, CH3 6DX



G21 Touring

G20 Limousine

Option 1

Option 2

Option 3No CAN-data wireavailable in boot

Red

Blue

Pos.13

Pos.14 !CAN-Data Wire

25

24

C

Option 1

Black

Yellow

CYellow

BlueC

Black

Red

3

2

C

E D

1 Pos.13CAN High Red

Pos.14CAN High Blue

Red

Blue

Pos.13

Pos.14 !CAN-Data Wire

!Important!Please note

informations in picture 1!

G21 TouringG20 Limousine

Option 2

Option 3

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Chester, CH3 6DX



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26

Option 2

Black54-Pin

Black

Yellow

CYellow

Blue

CBlack

Red

4

5

C

E D

3

CAN High = Red54-pin connector Black

Chamber 50

CAN Low = Blue54-pin connector Black

Chamber 49

!Important!Please note


Red

Blue !CAN-Data Wire

1

2

Black

Yellow

M

C

Cut to length!

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Chester, CH3 6DX



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27

28

Option 3

Black

Black

Yellow

Yellow

CYellow

Yellow

CBlack

Black

C

1

2

3

Yellow

M

C

Cut to length!

Black

1

2 3

!CAN-Data Wire

54-pinBlack!

Important!Please note


Black54-Pin

1Option 3

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Chester, CH3 6DX



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29

31

Option 3

Pos. 50Black

Pos. 49Yellow

E

4 5

6

1 2 3 4

R

R RR1

30

U1

R1

U2

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Chester, CH3 6DX



32

34

20/26

2

1

1 2 3U1 U1

33

20 Amp.minifuse

20 Amp.

Red/Blue

5 Amp.minifuse

5 Amp.

Yellow

20 Amp.minifuse

20 Amp.

Orange

15 Amp.minifuse

15 Amp.

Red/Yellow

20 Amp.

20 Amp.

5 Amp.

15 Amp.U1

U2 Orange

Yellow

Red/Blue

Red/Yellow

Revision: 2 / 15.01.2021BW-031-13U


Chester, CH3 6DX



35

36

21/26

U1

10 mm

B+/30

U2

2

3

1

+

PIN 10

+

15+

<12.5V (min 8 sec)12V OFF

>13.5V12V ON

INFO

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37

39

38

! Code3:3

The Voltage Control Module (VCM) in this kit is designed to be self switching at a pre-set voltage input. With the engine started, the switched output (e.g. caravan fridge or alternative), pin 10, will switch onat a preset gure of 13,5 volts.

When the engine is switched off, the switched output will remain live until the vehicle battery voltagedrops to a preset ure of approx 12,5 volts.

NOTE: The cut-off voltage depends on the condition of the vehicle battery, power consumption of thefridge etc. In all cases, the cut-of ure is preset so the vehicle engine can be started at any time.

For vehicles equipped with smart alternators and battery monitoring devices, the general operating voltage may not be high enough to switch on the relay.Therefore, we recommend turning on the headlights when towing.

IMPORTANT!

Trailer Simulator for 7- and13-pin Sockets

Optional

Consult your supplier.

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Chester, CH3 6DX



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Revision: 2 / 15.01.2021BW-031-13U


Chester, CH3 6DX



40

41

00P +19.0°C

1/minx1000

COMFORTTrailer turn

Indicator failureCOLD

11

22

P3344461601120120

8080

6060

404

202

101 00 mph

LEDL R!

L L L

WARNING

OFF

VHz

Hz

Hz

Hz

A

V

COM10A

400mA

mA

V

mV

HOLD MINMAX RANGE

DC

Manual Range 60+

V

VHz

Hz V

LD

ange 6

V

HOLD

DC

Manual Rang

V

part no.

LIGHTMATEIILIGHTMATEIII

Functional test

L 54 STOPR

Reverse+

30++

15+

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Revision: 2 / 15.01.2021BW-031-13U


Chester, CH3 6DX



42

44

Front and rear PDC

43

!The following lamp functions for the trailer are not supported by all towing vehicles with DRL circuit:

• Rear lights• Side lights• Numberplate lights

The parking lights or dimmed headlights must be switched on to activate this function!

Adapter socket

Optional

13-pin 7-pin

46

45

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Revision: 2 / 15.01.2021BW-031-13U


Chester, CH3 6DX



Part No: **-***-***

*/**

Electric wiring kit for towbars / **-pin / 12 Volt / ISO *****






******** **/**** >>

************

[email protected]


k

Revision: * / **.**.******-***-***


Chester, CH3 6DX



SOCKET CONNECTION

1

12 135

67

89

10

112

342 4

87

6

312

11

1

10

9

5

13

Pink

OrangeBlackYellow

White/Black

White/Red

Blue

White

Brown

Green

-

RedGrey

SOCKET CONNECTION

1-8 STOPReverse 10 9

21W21W 21W 42W 3x21W 42W 21W 180W 180W

DIN/ISO 11446

Pmax

YellowColour Blue White Green Brown Red Black Pink Orange Grey White/Black - White/

Red

1/L 2 3/31 4/R 5/58-R 6/54 7/58-L 8 9 10 11 12 13

+

15++

30+L R

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Revision: 2 / 15.01.2021BW-031-13U


Chester, CH3 6DX



part no: bw-031-13u electric wiring kit for towbars / 13-pin / 12 … 3seri… · 3:3 note: it may...

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