Towbar Electrics (Help)

[AndyS-line]

Guys i have just fitted a tow bar to my 2010 a6 avant. looking for some help on the electrics as i have a bypass relay wondering where to connect the wires to . I think this is the control module for the rear light would i be correct ?. Would anyone have a wiring diagram for this as i am at a loss with what to connect up . Any help would be great.

 

[RoyC]

I think this is the control module for the rear light would i be correct ?. Would anyone have a wiring diagram for this as i am at a loss with what to connect up . Any help would be great.

#NumberDescriptionQty.
list of uses; control unit
1control unit for access and; start authorisation; see illustration:; 909-00
2control unit for tyre pressure; control; see illustration:; 907-50
3engine control unit; see illustration:; 906-00; petr. engine
3engine control unit; see illustration:; 906-05; diesel eng.
4control unit for automatic; headlight range control; see illustration:; 941-25
5onboard supply control unit; see illustration:; control unit 2; 907-00
7cd changers; see illustration:; 035-38
7connection for external; audio sources; see illustration:; 035-38
7chip card reader for road; toll system; see illustration:; 035-57
8interface box with software; see illustration:; 'MMI'; 919-10
9control unit for special veh.; see illustration:; 907-20
10display and control unit; for multimedia interface 'mmi'; see illustration:; 919-00
10sender and receiver unit; for road toll system; see illustration:; 035-57
11door control unit; see illustration:; right front; 959-10
12control unit for movement; sensor; see illustration:; 951-40
13control unit for memory seat; and backrest adjustment; (passenger side); see illustration:; front; 959-20
14door control unit; see illustration:; right rear; 959-10
16control unit for parking aid; see illustration:; 919-20
17control unit for trailer; detection; see illustration:; 945-50
17control unit for; reversing camera system; see illustration:; 907-40
17interface control unit; for vehicle location system; see illustration:; 907-31
17amplifiers; for vehicles with cellphone; preparation; see illustration:; 035-55
18control unit with software for; electromechanical parking; brake -epb-; see illustration:; 615-60; PR-1KD
18control unit with software for; electromechanical parking; brake -epb-; see illustration:; 615-65; PR-1KW
19central control unit for; convenience system; see illustration:; 907-00
20control unit for battery; monitoring; see illustration:; 915-00
21receiver for radio-wave clock; see illustration:; 920-00
22amplifier for sound system; see illustration:; 035-43
23navigation unit with soft; ware; see illustration:; 035-07
24tv-receiver (tuner) with; software; see illustration:; analogue; 035-07
24tv-receiver (tuner) with; software; see illustration:; digital; 035-45
24amplifier for sound system; see illustration:; 035-40; PR-8YQ,8AJ,; 8DN,8DP+8RY
24amplifier for sound system; see illustration:; 035-41; PR-8D2,8DY,; 8DS+8RY
25control and receiver unit with; software for car radio; see illustration:; 035-43
25control unit for digital; radio reception; see illustration:; 035-45
25radio unit; see illustration:; 035-40; PR-8YQ,8AJ,; 8DN,8DP
25radio unit; see illustration:; 035-41; PR-8D2,8DY,; 8DS
26voice module with software; see illustration:; 035-43
26receiver unit for; tv reception; see illustration:; 035-40; PR-QU1,QV9
26receiver unit for; tv reception; see illustration:; 035-41; PR-QV2
27control unit for auxiliary; heater; see illustration:; 819-70
27Acontrol unit for fuel; pump; see illustration:; 919-30; frt.-wh.dr.+; PR-A8S
27Acontrol unit for fuel; pump; see illustration:; 919-32; frt.-wh.dr.+; PR-A8U
27Acontrol unit for fuel; pump; see illustration:; 919-35; quattro
28door control unit; see illustration:; left rear; 959-10
29control unit for memory seat; and backrest adjustment; (drivers side); see illustration:; front; 959-20
30control unit for airbag; see illustration:; 959-30
30interface box; for vehicles with preparation; for telephone; see illustration:; 035-57; "J.."
31door control unit; see illustration:; left front; 959-10
32control unit for telephone; see illustration:; 035-50
33interface box; see illustration:; 'HANDY'; 035-56
34electronic module for steering; column combination switch; see illustration:; 'SMLS'; 953-50
35control unit; control unit for electronic; steering column lock; see illustration:; 419-50
35control unit for vehicle; authorisation system; see illustration:; 419-50
36onboard supply control unit; see illustration:; control unit 1; 907-00
37relay plate and relays; see illustration:; 937-00
37relay plate and relays; water box; see illustration:; 937-20
38abs unit with control unit; see illustration:; 614-10
39control unit; auxiliary heater; see illustration:; 819-70
40combi-instrument; see illustration:; 920-00
41wiper motor with control unit; see illustration:; 955-00
42ignition/starter switch; see illustration:; 909-00
43display and control panel with; cu for electronically; controlled air-conditioning; see illustration:; front; 820-00; PR-9AK
43display and control panel with; cu for electronically; controlled air-conditioning; see illustration:; front; 820-10; PR-9AQ
44control unit for 6-speed; automatic gearbox; see illustration:; 325-80
44control unit for automatic; transmission - infin. variable; see illustration:; 927-50
45diagnosis interface for; data bus (gateway); see illustration:; 907-00
45control unit for infor-; mation electronics; see illustration:; 035-00; PR-8YQ,8AJ,; 8DP
45control unit for infor-; mation electronics; see illustration:; 035-05; PR-8DY,8DZ
46control unit for; distance regulation; see illustration:; 907-05
47control unit for adaptive; suspension; see illustration:; 616-30
48control unit for; opening garage door; see illustration:; 907-05

#NumberDescriptionQty.
switch - brake light; switch for clutch; pedal; socket; control unit for trailer; detection
switch - brake light
14F0945459Bbrake light sensor; 4 pin1
-switch for clutch; pedal; see illustration:; 721-25
socket; for models with; towing facility; PR-1D4
68K0945505housing for trailer towing; socket; 13 pin1
77H0971978rd. connector sleeve housing; 13 pin1
81C0945527cover with grommet1
9N 01100518hexagon nut; M53
10N 10680601hexagon socket flat; head bolt; M5X303
117H0972217Cannular contact w/ solder pinX
control unit for trailer; detection; PR-1D4
154F0907383Dcontrol unit for trailer; detection1
16no replacement part for; this model
176Q0937713flat contact housing with; contact locking mechanism; 16 pin; black1
186Q0972883Bflat contact housing with; contact locking mechanism; 12 pin; red1
-retainer for control unit; see illustration:; right rear; 907-10

 

[c4a5er]

Guys i have just fitted a tow bar to my 2010 a6 avant. looking for some help on the electrics as i have a bypass relay wondering where to connect the wires to . I think this is the control module for the rear light would i be correct ?. Would anyone have a wiring diagram for this as i am at a loss with what to connect up . Any help would be great.

You need to know what you have....wiring a control or trailer detection module will be completely different from wiring a bypass relay. Trailer detection modules should come with installation instructions. Bypass relays are generic and you should be able to find wiring info online.

 

[AndyS-line]

I have a bypass relay and a bag of scotch clips that came with it. I was just looking to see if i could find a wiring diagram that shows which wires run to the lights from the control module and i could connect the scotch clips to them.

 

[N17ELE]

Hi
This link will give you all you need
http://www.rydertowing.co.uk/vehicle-data/sheets/audi/a6-all-2004-2010

 

[N17ELE]

Hi Andy
I have just installed my bypass relay using the information from above link. It was a lot easier to do than I thought. All the connections you need are behind the right hand side cover in the boot. There is a block connector which has all the wires you need including the left hand indicator, there is a power there which you can take a fused power from (mine was the brown plug)
Happy wiring

 

[Blagadan]

There is a block connector which has all the wires you need including the left hand indicator, there is a power there which you can take a fused power from (mine was the brown plug)
Happy wiring

Can you point out the block connector you refer to? I'm about to wire a relay module to my 2010 A6 C6 Avant and the more info I have beforehand the better!

 

[Shaun todd]

I just used the kufatec loom as it was easier and keeps it all OEM as some of the relay bypass don't work 100% with functionality and register with car .as your car changes certain aspects when towing engaged ... Also if you pdc sensors most relay bypass don't work correctly with the towing

 

[A8ben]

I just used the kufatec loom as it was easier and keeps it all OEM as some of the relay bypass don't work 100% with functionality and register with car .as your car changes certain aspects when towing engaged ... Also if you pdc sensors most relay bypass don't work correctly with the towing

Long shot where did you but the harness I’m desparate

 

[Pee Jam]

Is this it?

A6 - 4F

www.kufatec.com