Thread: D4 Electric Trailer Brake Wiring

Originally Posted by kimbers74

Really? That’s a huge saving if so. I’m getting a D4, 2014 model. Is that all I need too?

Arguably simpler still, as only a single resistor, wired in parallel to one of the indicator circuits, is needed. Narva make something suitable.

I ended up wiring up an adapter with a large round socket at one end, a large round plug at the other, and a resistor parallel to the left indicator circuit. When a trailer has incandescent lights I plug directly into the car. If LED, then I plug the trailer into one end of this adapter, then the other into the car to introduce sufficient resistance into the circuit. Mainly because I didn't want to root around with the car's wiring.

My own trailers are wired up with resistors or incandescents, so the adapter is only when pulling something i don't own

Hi all for not very good auto elec.., I follow these instructions for my disco 4 2.7 and worked a treat lot of reading then reading it again but bloody good work ... plugged it in and worked first time...
Cheer
Dave

0001419_universal-tow-pro-wiring-kit.jpg

Hi - I am planning to install a Redarc Towpro Elite into by 2012 D4 using the details instructions in this post and was considering purchasing the Redarc Universal wiring kit - it is $290 and is recommended by Redarc but I had a look at a picture of the kit (shown above) and looks like the cable to rear of vehicle is in a plastic flexible tube which may make it difficult to install past pillars etc - does anyone have any experience or has anyone seen any threads on this ? (I did a search but could not find any postings) - thanks, dannyboydownunder

Evening,

Apologises if this has been stated before but have not read all 60 odd pages yet.
Today I have removed the controller from my Range Rover Sport TDV8.
A REDARC which was on the car at putprchase.

They have wired the rear up:to the actual plug. Running the lead through the right hamd rear,(off side rear), grommet to light cluster and along the bumper to the plug. Seems nice and easy.

Just sharing.

Chilly

Hi everyone

I got my car back on Friday after a meeting a roo a few weeks ago. Read this thread front to back and front again while waiting so I was ready. Spent most of Saturday wiring up the redarc tow pro elite (3rd car now) brake controller and even took the camper trailer for a spin once done. All was fine, indicators ok, brakes and brake lights ok, brakes and brake lights on camper trailer working when pressing the manual override knob, fantastic - my soldering and crimping skills must have been satisfactory.

BUT

no trailer tail lights - like WTF? Where did I go wrong? How could everything else be working and not them? Checked and rechecked trailer wiring. Checked plug on car (please don't make me have to remove the bumper!), no it can't be that, can't be, please don't be. Please be something easier...

And it was.

Back to AULRO for a search and voila - the fuse in the lower glove box panel had blown. I think the neighbourhood heard the cheer when I found this. Replaced fuse and ALL is working - woo hoo. No trailer icon on the dash when indicating but I can almost live without it. Would be nice to have but does the 2014 D4 SDV6 HSE have this?

Did the 6amp diode and everything as per the instructions here. Thank you so much! Just wish the disco had the plug and play attachment like the 2014 RR Vogue had - a lot easier there.

Any help on the trailer icon would be good as I'd like to impress SWMBO with the functionality of the Disco and my awesome decision to stick with the Land Rover brand!

Update Need to get one of those resistor thingies. Even though the led's on the trailer work fine - the resistor thingy is what makes the icon pop up and gives you trailer sway control and new gear shift points. Thanks again all.

Originally Posted by DiscoDJ

Hi everyone

I got my car back on Friday after a meeting a roo a few weeks ago. Read this thread front to back and front again while waiting so I was ready. Spent most of Saturday wiring up the redarc tow pro elite (3rd car now) brake controller and even took the camper trailer for a spin once done. All was fine, indicators ok, brakes and brake lights ok, brakes and brake lights on camper trailer working when pressing the manual override knob, fantastic - my soldering and crimping skills must have been satisfactory.

BUT

no trailer tail lights - like WTF? Where did I go wrong? How could everything else be working and not them? Checked and rechecked trailer wiring. Checked plug on car (please don't make me have to remove the bumper!), no it can't be that, can't be, please don't be. Please be something easier...

And it was.

Back to AULRO for a search and voila - the fuse in the lower glove box panel had blown. I think the neighbourhood heard the cheer when I found this. Replaced fuse and ALL is working - woo hoo. No trailer icon on the dash when indicating but I can almost live without it. Would be nice to have but does the 2014 D4 SDV6 HSE have this?

Did the 6amp diode and everything as per the instructions here. Thank you so much! Just wish the disco had the plug and play attachment like the 2014 RR Vogue had - a lot easier there.

Any help on the trailer icon would be good as I'd like to impress SWMBO with the functionality of the Disco and my awesome decision to stick with the Land Rover brand!

Update Need to get one of those resistor thingies. Even though the led's on the trailer work fine - the resistor thingy is what makes the icon pop up and gives you trailer sway control and new gear shift points. Thanks again all.

Trailer sway is there no matter what. It’s simply a function of the stability control. Different shift points and disabled reverse sensors is enabled by trailer detection.

Thanks Disco Jeffstar.

Resistor box built and all good. Thanks for the confidence in trailer sway control too, I did read that so sorry for posting - seniors moment.

Ok, help please!!!

I only want info suitable for my 2013 Discovery HSE as there’s just too much deviation in this thread!

I wired my Osborn Park supplied magic box as described. It came with no instructions!

Accessed the trailer loom in the Left rear quarter panel as shown in pic.

Yelow to Yellow

Brown to Green

White to Earth

When connected to my van with LED lights, I do not get the little trailer signal on the dash at any time, so effectively my vehicle doesn’t recognise the caravan.

‘What am I doing wrong???

Thanks folks for info on the 2013 and similar model of Disco.

Ken

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