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Changing the Trailer Wiring
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Sundayjumper
 


Member Since: 23 Sep 2024
Location: Berkshire
Posts: 101

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Indus SilverDiscovery 4
Changing the Trailer Wiring

My recently purchased D4 has the OEM 12N/12S sockets. My trailer is 13 pin. Can I simply remove those sockets & rewire the cables into a 13 pin socket ? Or is there some nuance I'm not aware of ? The proper LR 13 pin kit is >£100 whereas I have a spare 13 pin socket sat here already potentially making the job £0.

Next thing is to put an Anderson connector in the spare hole to power the trailer winch. That'll tie into a 2nd battery / split charge job.
  
Post #237933211th Oct 2024 9:16 am
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skunk38
 


Member Since: 05 Jan 2024
Location: South Wales
Posts: 115

Wales 2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

I an adapter that goes the other way with 13 pin on the car to 7 pin on the trailer.

Would something like this help in the short term?

https://www.amazon.co.uk/Xtremeauto-Pin-To...&psc=1
 Volunteer driver with 4x4 Response South East Wales
Volunteer Rider for Blood Bikes Wales

Land Rovers owned -
Disco 1 - 300 Tdi - dead
Disco 1 - 200 series - 3.5 V8 on LPG - dead
Disco 2 - TD5 - sold
Disco 1 - 300 series - 3.9 V8 on LPG - sold
Disco 3 - TDV6 HSE - current 
 
Post #237934011th Oct 2024 11:15 am
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Sundayjumper
 


Member Since: 23 Sep 2024
Location: Berkshire
Posts: 101

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Indus SilverDiscovery 4

I do have one of those somewhere - not that I can find it right now of course ! No rush. I don't need the trailer urgently. I'm just getting everything sorted ready for when I do.
  
Post #237934611th Oct 2024 12:04 pm
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swansty
 


Member Since: 21 Sep 2008
Location: Northern Ireland
Posts: 939

Northern Ireland 2010 Discovery 4 3.0 TDV6 XS Auto Zermatt SilverDiscovery 4
Re: Changing the Trailer Wiring

Sundayjumper wrote:
My recently purchased D4 has the OEM 12N/12S sockets. My trailer is 13 pin. Can I simply remove those sockets & rewire the cables into a 13 pin socket ? Or is there some nuance I'm not aware of ? The proper LR 13 pin kit is >£100 whereas I have a spare 13 pin socket sat here already potentially making the job £0.

Next thing is to put an Anderson connector in the spare hole to power the trailer winch. That'll tie into a 2nd battery / split charge job.


I don’t think you can just rewire on the LR side but you could rewire the trailer side. Or use an adapter as said above. Mind you, after writing this, I’m wondering that maybe you could just pick the 7 wires you need on the LR side and wire into a new socket. If it was me though, I’d be changing the trailer. I converted to 13pin this year on the LR as my white socket melted.
  
Post #237935211th Oct 2024 4:12 pm
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EverythingsFine
 


Member Since: 20 Jul 2024
Location: West Midlands/South West
Posts: 8

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4
Re: Changing the Trailer Wiring

Sundayjumper wrote:
My recently purchased D4 has the OEM 12N/12S sockets. My trailer is 13 pin. Can I simply remove those sockets & rewire the cables into a 13 pin socket ? Or is there some nuance I'm not aware of ? The proper LR 13 pin kit is >£100 whereas I have a spare 13 pin socket sat here already potentially making the job £0.

Next thing is to put an Anderson connector in the spare hole to power the trailer winch. That'll tie into a 2nd battery / split charge job.


I don't see why not, I plan to do the same unless someone with greater knowledge offers a reason why not to do it.
 Previous LR's
Disco 300tdi - burnt itself out on my drive - heated windscreen wiring shorted out.
P38 HSE Vogue V8 Petrol-oh so very expensive and engine died but very nice whilst it worked 
 
Post #237936311th Oct 2024 8:54 pm
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Bicycle repairman
 


Member Since: 18 Sep 2019
Location: Cumbria
Posts: 188

United Kingdom 2010 Discovery 4 3.0 SDV6 GS Auto Galway GreenDiscovery 4

I did exacly this on my D4 the other weekend no dramas and works fine checked it on the tintent no problem
 D4 GS let the retro fit begin
Heated steering wheel
Aftermarket TPMS
Double Din head unit satnav and TV
Reverse Camera
Cubby fridge
Door panel upgrade
Mood lighting
Digital Dash personalised
Back lit sun visors
4.5 Facelift front, rear and memory mirrors
Stainless bumper tread plate
6 pot Brembo conversion
HSE heated memory seats
Retro fit auto lights and wipers
LR 663 Defender alloys
275 45 20 GG AT3s
quarter of a D3 
 
Post #237940212th Oct 2024 5:47 pm
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HairyFool
 


Member Since: 04 Jan 2023
Location: North Essex
Posts: 672

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto ZanzibarDiscovery 4

A 2x7 to 13 "Y" adapter works and all that does is concatinate the two sockets into one.

What you are thinking of is to do the same thing but avoid the Y lead so yes it will work. The only complication might be if there is a switch in the socket to disable the fog lights
 A visitor from the dark side, my other vehicle is an is still an EV. Strictly speaking its SWMBO.  
Post #237941912th Oct 2024 10:35 pm
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