Thread: D4 Electric Trailer Brake Wiring

Size that was mentioned in the forum

Yes the vans lights all work
Will hook van up and try again and report back
Thanks once again for your input, Great forum

Problem solved
Went back to the dealer this morning as I had run out of solutions.
Apparently as part of their pre delivery they cut the brown wire in the plug harness under the rear bumper. Their reason because of the different European/Australian wiring. They said they had been doing this since 2005. Don't know whether this is dealer specific or Australia wide
Therefore my connecting the blue wire to the brown wire inside was going nowhere.
Thanks for all advice

We're picking up a new D4 towards the end of July.
We've been told that we need to ask the dealer to 'activate the towing package'.
Can anyone advise what's involved?
thanks
David

Originally Posted by David47

We're picking up a new D4 towards the end of July.
We've been told that we need to ask the dealer to 'activate the towing package'.
Can anyone advise what's involved?
thanks
David

David,
Im not surprised you've been told this kind of thing - I heard all sorts of things form various dealers. Bottom line though, my understanding is that the dealer does not need to do anything - All the towing software is there and working from the factory.

You will probably need a UK round to Aus 7 pin flat adapter for your trailer lights.

Depending on what you need to tow (less than 750kg or greater than 750kg) you may need to install an electric brake controller. If thats the case then read this thread many, many times and get it clear in your head whats required. There are half a dozen posts that are crucial, but installing is easy if you take your time.

LED lights on your trailer are another issue you need to consider. Due to European laws that mandate how trailer electrics should work, you need to wire in a little box to get all the electronics working correctly when LED lights are plugged in - Best and easiest way is from here:
Linear Electronic Design | Home

If you trailer has "normal" bulbs then all will work fine without any problems.

R
Jon

Originally Posted by Yorkshire_Jon

David,

Im not surprised you've been told this kind of thing - I heard all sorts of things form various dealers. Bottom line though, my understanding is that the dealer does not need to do anything - All the towing software is there and working from the factory.



You will probably need a UK round to Aus 7 pin flat adapter for your trailer lights.



Depending on what you need to tow (less than 750kg or greater than 750kg) you may need to install an electric brake controller. If thats the case then read this thread many, many times and get it clear in your head whats required. There are half a dozen posts that are crucial, but installing is easy if you take your time.



LED lights on your trailer are another issue you need to consider. Due to European laws that mandate how trailer electrics should work, you need to wire in a little box to get all the electronics working correctly when LED lights are plugged in - Best and easiest way is from here:

Linear Electronic Design | Home



If you trailer has "normal" bulbs then all will work fine without any problems.



R

Jon

You don't need this on the D4 only the D3. The D4 only needs a resistor in parallel with one or both of the trailer indicator LEDs to be fully functional. Even without this it will work. It just won't flash the trailer display on the dash or activate all the trailer programming.

Nor disable rear distance sensors, nor change gearbox shift points.

Originally Posted by David47

We're picking up a new D4 towards the end of July.
We've been told that we need to ask the dealer to 'activate the towing package'.
Can anyone advise what's involved?
thanks
David

Purchased D4 SDV6 late May for the extra power when towing 2.5 t caravan so my "activation" was had dealer add a Redarc brake controller and LR tow hitch receiver and tongue(50mm ball) plus a large round 7 pin. Brake controller works brilliant, no weight distribution stuff involved , 8 speed auto smooth as with the ability to go "manual" quickly on some hills. Changing to McHitch auto soon though the reversing camera when changed to trailer hitch mode is fantastic, (a line on the screen from your tongue/ball to the caravan coupling) but thats just me being too lazy to hop out too often. Hope this helps.
Steve