A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D3 > D3 - Everything Else

D3 - Everything Else Anything that doesnt fit elsewhere

Reply
 
Thread Tools Display Modes
  #1  
Old 26th June 2017, 07:18 PM
North2007 North2007 is offline
Member
 
Join Date: Jul 2016
Location: Mid Ulster - Northern Ireland
Posts: 74
Default DIY Westfalia Towbar Install - No Pre Installed Loom

Hi Guys, I am trying to install a old WestFalia 4E0907383A into my 2003. It doesn't appear to have a plug in loom for the control unit. I need to break in the loom to connect the 9 wires. Has anyone done this before or can advise? Regards Steve
__________________
2003, A8 D3 4.0 TDI
Reply With Quote
  #2  
Old 30th June 2017, 07:06 AM
27litres's Avatar
27litres 27litres is offline
Senior Member
 
Join Date: Jan 2014
Location: Belgrave, Australia
Posts: 803
Default

I haven't done a D3 before, but I have installed towbars on a number of cars.
The most relevant is the D2.

The official wiring kit for the D2 is obsolete, and can't be found.
I'm not sure how advanced it was in relation to the ECU/ESP, but I expect it would disable the parking sensors, which mine currently doesn't and is a pain whenever I reverse a trailer!

If you can get a factory loom for a D3, I suggest you do, as manufacturers quite often do a lot of work on towing kits to tie them in to things like the stability program and parking sensors.

If you can't find one, you will need a relay box - these are small and inexpensive and can be had from towbar installers and caravan places. They are needed to keep the trailers' electrical drain off the lighting circuits (thanks to bulb warning). You will need to find a suitable ignition switched live circuit and tap into it (dual fuse taps are good for this).

You will need to tap into the lighting circuits at the rear of the car. The D2 has a great feature here in that the lights themselves have spade terminals for each of their circuits making tapping the lights extremely simple!
I'm not sure what you use your extra pins on your trailer plugs for (we only have 5 or 7 pins on our plugs), but you will then need to tap into any additional circuits as required and couple to the relay box.
__________________
Cheers

Marty


____________________
Current:
2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest!
2002 Audi S8 - Project
Replacement head coming arrived thanks to MJ
Silver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that).
Family:
2009 Volvo XC90 V8 R Design
- has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car!

Sold:
1997 Audi A4
- Hamilton's Club Sport, Achat Grey (will miss the old girl)
Reply With Quote
  #3  
Old 30th June 2017, 07:56 AM
paulrstaylor paulrstaylor is offline
Senior Member
 
Join Date: Jul 2010
Location: Manchester
Posts: 1,317
Default

I don't think and D3 came pre-wired. The factory bar is Westfalia as is the ECU, they do a retrofit loom and ECU kit which is identical in function which you can see here.

You can download the instructions as a PDF to see what is involved
Reply With Quote
  #4  
Old 30th June 2017, 10:47 AM
NOR_KNet NOR_KNet is offline
Member
 
Join Date: Mar 2015
Posts: 33
Default

Have you read this thread on audiworld? Maybe it could be of any assistance.

https://www.audiworld.com/forums/a8-...t-1-a-2848793/
Reply With Quote
  #5  
Old 8th August 2017, 08:34 PM
North2007 North2007 is offline
Member
 
Join Date: Jul 2016
Location: Mid Ulster - Northern Ireland
Posts: 74
Default

Thanks Guys, Ive used a add on smart box in the meantime until I get time to sort.
__________________
2003, A8 D3 4.0 TDI
Reply With Quote
  #6  
Old 1st September 2017, 10:56 AM
North2007 North2007 is offline
Member
 
Join Date: Jul 2016
Location: Mid Ulster - Northern Ireland
Posts: 74
Default

UPDATE: I've successfully installed the orginal trailer controller into the my D3. Benefits include: automaticity switches to towing mode (when plug is attached), in dash trailer turning signal.

Using a7pin, plan to upgrade to 13 pin in future.
__________________
2003, A8 D3 4.0 TDI
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 01:19 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.