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AlanM



Member Since: 20 Feb 2007
Location: Victoria BC
Posts: 87

Canada 2007 Range Rover Sport Supercharged Zambezi Silver
DIY Trailer Light Hookup

I got frustrated with trailer lights today: I added a socket and wires directly to the rear light cluster, but upon using an indicator the system craps out and I get no indicator light at all either on the trailer or the car.
Any other cheapskate out there tried the same thing?
Any ideas anyone?
I should add that I have a little box in there to convert the English system on the car of separate indicator and brake light to the American system on the trailer of one bulb for indicator and brake light. This box worked fine on my previous RR2.


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Come for a visit, Victoria is beautiful!


Last edited by AlanM on Wed Feb 28 2007 5:39am. Edited 1 time in total

Post #88139 Wed Feb 28 2007 12:00am
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AlanM



Member Since: 20 Feb 2007
Location: Victoria BC
Posts: 87

Canada 2007 Range Rover Sport Supercharged Zambezi Silver
Trailer hookup for $3.00 not $300 !

Spurred into action by the idiot above, I got to looking at the problem more intensively. The twit just mentioned hooked up his trailer lights by splicing into the wires just behind the rear lights. Tut, tut this will not do it. LR have already wired up a nice pair of sockets for trailer wires and all you have to do is find these two sockets, determine which terminals operate which rear lights and plug into them.

Before starting remove the plastic bumper plate from just above the hitch (two wide flat screws), and ensure your vehicle does not already have any trailer sokets showing behind it!

Get a wide flat prybar about 18" long like this: (I kid you not.)


Prise off the lower left bit of carpet beside the tool tray lid. Prise off the rear of the left hand luggage compartment side panel. Move to the left rear door and prise up the rear portion of the left rear doorsill. (You might want to pull off the rubber door seal for a few feet.) Prise off the front of the side panel (the low forward bit is a sod). Remove the 12v plug then the panel can be taken out of the car.



The pre-wired sockets can now be seen attached to a metal bracket just in front of the rear lights. They are the ones with wires running into them but no wires running out of them. Detatch them from the bracket. Press on the release tab and pull off the dummy plugs on the ends (I can't see how to use these unless you have some terminals that will push into them - I didn't bother and discarded them).

LR have already catered for the conversion from English to American indicator/brake lights - just find the right terminals!

Solder a pin to the end of a spare bulb and a wire to the side. Ground the wire on one of the visible ground terminals. Switching on various lights on the car, use the bulb to test which socket holes on both sockets you need for your particular hookup (side lights, indicators, brake lights etc. There is even one that's always live).

Push a bit of coat hanger wire through one of the rubber grommets leading downwards and starting near the hitch thread the wire from your trailer plug the best way you can to avoid the 'big dangly weights' and reach the coat hanger wire, then use it to pull the trailer wire through.

Solder suitable terminals to each trailer wire and push into the socket holes you located above. Tape everything up to insulate it and stop it rattling.

Put everything back!

The dealer wanted $300 plus for the harness plus 1.5 hours labour. (In conversation with him I gleaned where the pre-wired sockets are and that there is no re-programming needed.)

My total cost $3.00 for a small four pin trailer plug.


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Come for a visit, Victoria is beautiful!


Last edited by AlanM on Wed Aug 04 2010 1:02am. Edited 1 time in total

Post #88145 Wed Feb 28 2007 4:39am
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Kaine



Member Since: 26 May 2006
Location: Hills of Shropshire
Posts: 8902

United Kingdom 

Alan - respect is definetely due Bow down Bow down Bow down

Post #88177 Wed Feb 28 2007 10:27am
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shmoogle



Member Since: 07 Sep 2005
Location: ... and for every sprinkle I find, I shall kill you!
Posts: 24350

United Kingdom 

Alan, you're a marvel with these things. Excellent stuff!! Thumbs Up

Stickied it. 

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Post #88257 Wed Feb 28 2007 2:43pm
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JayMann



Member Since: 19 Jan 2006
Location: Stop acting like snob when you just won the Lotto!
Posts: 22898

United Kingdom 2006 Range Rover Sport TDV6 HSE Buckingham Blue

Good stuff mate Thumbs Up RRS TDV6 Gone but still around
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Post #88291 Wed Feb 28 2007 3:32pm
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AlanM



Member Since: 20 Feb 2007
Location: Victoria BC
Posts: 87

Canada 2007 Range Rover Sport Supercharged Zambezi Silver

Hey - I got another sticky !

Thanks guys.

(What to tackle next?)

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Come for a visit, Victoria is beautiful!

Post #88450 Thu Mar 01 2007 4:54am
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mlines



Member Since: 10 Dec 2006
Location: UK
Posts: 448

United Kingdom 

Has anyone had problems with "flashing" indicators?

Let me explain.....

I have a properly wired up towbar (factory fit) that works really well with trailers and caravans. However I now have replaced the old rusted out light units on my trailer with proper LED units. When I mean proper I mean E certified LED cluster units, not e-bay specials.

All the lights work fine on demand, sidelights, brake lights and indicators. However, both indicators continually pulse dimly when connected to the vehicle. The "Trailer" light does not come on when the trailer is connected.

I suspect that the pulsing is some sort of electronic sensing pusle to see if the trailer is connected and instead of detecting the low wattage LED units it simply flashes them.

Does this sound likely?

Martin 2016 RRS 4.4 TDV8 Autobiography Dynamic in Odyssey Red and Stealth Kit

Post #150169 Tue Jan 01 2008 7:50pm
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Tim in Scotland



Member Since: 30 May 2005
Location: Driving along in my automobile
Posts: 15642

2013 Range Rover Sport SDV6 HSE Stornoway Grey

Yes there is a problem with LED lamps and the LR wiring system - there is a cure for it over on the D3 forums IIRC. 2015MY Corris Grey SDv6 HSE Dynamic, preceeded by a 2.7SE RRS, a 3.6TDv8 RRS, several FFRR's and 2 Evoques.
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW.... my fun car to enjoy bashing and denting 20 years old and still giving loads of fun

Post #150175 Tue Jan 01 2008 8:43pm
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xLusi0n



Member Since: 12 Jun 2007
Location: Los Angeles
Posts: 92

I just saw this thread after I installed my OEM wiring Very Happy HAHA, sucks. But, it was only 150 USD for me. And I guess I don't mind that for a clean install.

Lost 2 of those stupid clips. I never liked those clips.

Post #171751 Thu Jun 05 2008 11:53pm
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drdelrrs



Member Since: 02 Nov 2010
Location: UK
Posts: 1102

United Kingdom 2012 Range Rover Sport 3.0 TDV6 HSE Lux Orkney Grey

Above all check you have a very good earth connection; funny things will happen to indicators, brake lights etc otherwise.

Post #285051 Thu Jan 06 2011 5:58pm
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livefreeordie999



Member Since: 10 Nov 2015
Location: Coleraine
Posts: 4

Northern Ireland 2006 Range Rover Sport TDV6 HSE Java Black

Hi, i have just tried this diy approach with using a bulb tester to find out which pins power what. I am using a standard 7 pin socket but i can only get one sidelight to work on trailer board?? Also if i brake the when i am indicating the indicators go off?

Anyone help or has anyone done it the "cheap" way successfully and let me know exactly which wires work for them?

How do you find separate left and right side lights? Thanks, Gab

Post #487163 Thu Feb 11 2016 6:00pm
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Andy K



Member Since: 18 Sep 2015
Location: GL
Posts: 1454

England 2005 Range Rover Sport TDV6 HSE Rimini Red

Connect the trailer L and R Side lights (black/brown) to the same RRS wire. This is what the factory kit does.


RRS Colour.....7pin Socket black

Yellow.............Yellow 1 Ind L
Red/Yellow......Blue 2 Fog
Chassis stud...White 3 (earth)
Green.............Green 4 Ind R
Brown..............Brown 5 and Black 7 Tail lights
Green/Purple....Red 6 Brake


Caravan Socket
RRS Colour.....7pin Socket white/grey

Green/brown.....Yellow 1 Reversing lights
Chassis stud.....White 3 (earth)
Green/Brown(thick).....4 Green Power
Red/white or Red........6 Red Ignition power.
Chassis stud......Black 7 (earth)


Last edited by Andy K on Tue May 23 2017 6:11pm. Edited 4 times in total

Post #492302 Thu Mar 31 2016 11:58am
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Andy K



Member Since: 18 Sep 2015
Location: GL
Posts: 1454

England 2005 Range Rover Sport TDV6 HSE Rimini Red

mlines wrote:
Has anyone had problems with "flashing" indicators?

on my trailer with proper LED units. When I mean proper I mean E certified LED cluster units, not e-bay specials.

However, both indicators continually pulse dimly when connected to the vehicle. The "Trailer" light does not come on when the trailer is connected.

I suspect that the pulsing is some sort of electronic sensing pusle to see if the trailer is connected and instead of detecting the low wattage LED units it simply flashes them.

Does this sound likely?

Martin


You need a decent load on the trailer indicator. I tried a 5W bulb and the car wouldn't detect it.
I find 21W bulbs work best Laughing

Post #492304 Thu Mar 31 2016 12:03pm
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