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Tow-Bar electrics
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patrique
 


Member Since: 11 Jan 2020
Location: Wadebridge Cornwall
Posts: 6

United Kingdom 2011 Discovery 4 3.0 SDV6 Base 7 Seat Auto Baltic BlueDiscovery 4
Tow-Bar electrics

Hi all , Im hoping someone out there can help me . Im new to this , but I have a D4 and I love it .
So heres my problem . Im trying to change the trailer plugs from 7 pin 12N and 12S to 13 pin . So far ive taken off both plugs , after a struggle ! and connected the 12N ( black plug ) cables to the new 13 pin plug as the color codes match the numbers on the plug . However , the 12S ( white plug ) cables dont match the color code numbers ! For instance where there should be a Pink (reverse) , Orange(prem power) etc; I have Red/White , Pink/Blue , Yellow/Brown , and two White one marked 3 and the other marked 7 !!! Which is only 5 cables not 7 !! Has anyone come across this same problem and if so did you manage to solve it . Would really appreciate any help if pos .
  
Post #211244712th Jan 2020 6:00 pm
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M3bobby
 


Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857

United Kingdom 

You probably could have saved a lot of hassle and just bought a converter. There’s even an approved LR version, I bought mine for £5 off ebay and it only adds about 10” of cable length.

Is your existing loom a LR product?

Below is a Halfords adaptor but as I said, I got a second hand LR one off eBay for £5.

https://www.halfords.com/camping-leisure/t...cAQAvD_BwE
 012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete) 
 
Post #211253413th Jan 2020 8:19 am
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10355

England 

Hi - not all the pins are used. Is this any good to you:

Click image to enlarge


Al
 Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD 
 
Post #211254113th Jan 2020 8:37 am
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oddefanten
 


Member Since: 29 Sep 2016
Location: Oslo
Posts: 1

Norway 

I believe I have seen both types installed as well (one on each side of the hook). Anyone done this?
  
Post #211254213th Jan 2020 8:40 am
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10355

England 

^^ no you cant do that as 12S and 12N would use up both holes, so you cant have 12S, 12N and 13 pin as that would need 3 holes - you could have 12N and 13pin.

Al
 Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD 
 
Post #211255413th Jan 2020 10:30 am
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patrique
 


Member Since: 11 Jan 2020
Location: Wadebridge Cornwall
Posts: 6

United Kingdom 2011 Discovery 4 3.0 SDV6 Base 7 Seat Auto Baltic BlueDiscovery 4

al cope wrote:
Hi - not all the pins are used. Is this any good to you:

Click image to enlarge


Al
Thanks Al , I shall give it a go . The problem I still have though , are the colors on my 12S such as Pink/Blue , Red/White , Yellow/Brown , and the two white cables marked 3 and 7 ! what do they represent ? Like , is the Yellow/Brown "Reversing" , is the Pink/Blue "Positive Ignition" and which of the white ones is earth 3 or 7 ??  
Post #211261513th Jan 2020 3:32 pm
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Weyboat
 


Member Since: 13 Apr 2018
Location: Weymouth
Posts: 273

England 2015 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Redacted
 Gone 2016 Landmark D4
Current 2015 HSE D4 - AKA - 'Gandalf the Grey' 


Last edited by Weyboat on 13th Jan 2020 10:04 pm. Edited 1 time in total 
Post #211262013th Jan 2020 4:05 pm
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10355

England 

So easy bit first, the 2 white cables you have on pins 3 and 7 of your 12S plug are both earths (thats what those 2 pins are) as the caravan fridge has its own earth return.

With regards colours, what number pins were yours connected to (or have you just disconnected them all Shocked ), as all you needed to do was take the same wire from whatever pin it was in the 12S to the new pin number in the 13Pin socket.

Al
 Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD 
 
Post #211262213th Jan 2020 4:21 pm
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DrRobH
 


Member Since: 10 Oct 2015
Location: Hampshire
Posts: 927

United Kingdom 

Ditch the lot and just buy a genuine 13pin kit. Plug and play on later motors Thumbs Up
Life’s too short Rolling with laughter Whistle
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Post #211262313th Jan 2020 4:37 pm
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al cope
 


Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10355

England 

and just to add to that, if you have the genuine LR loom, it come in 2 sections, so you dont have to change the whole lot, just the bottom half which is the part the sockets are attached to.

Al
 Volvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD 
 
Post #211263113th Jan 2020 5:19 pm
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patrique
 


Member Since: 11 Jan 2020
Location: Wadebridge Cornwall
Posts: 6

United Kingdom 2011 Discovery 4 3.0 SDV6 Base 7 Seat Auto Baltic BlueDiscovery 4
Tow-Bar electrics

al cope wrote:
So easy bit first, the 2 white cables you have on pins 3 and 7 of your 12S plug are both earths (thats what those 2 pins are) as the caravan fridge has its own earth return.

With regards colours, what number pins were yours connected to (or have you just disconnected them all Shocked ), as all you needed to do was take the same wire from whatever pin it was in the 12S to the new pin number in the 13Pin socket.

Al

Wish it were as easy as you say . Ok , the plug is off the D4 , the loom is genuine LR as the back of the plug is sealed in sealant ! Ive taken the sealant out with only 5 cables showing . They run in this line ; No1 Pink/Blue , No7 White , No4 Yellow/Brown all in a strait line . Then , all in a strait line , No2,White , No7 White (as before) No5 Red/White . That is how the cables are connected . 1 to 4 , 2 to 5 with 7 in the middle . If I work on the proviso that No1 pin is the reversing light (Pink/Blue) what are the others !! No7 pin is white and ill take that as the earth , but what of the rest !! Confused.com Confused Appreciate your help
Forgot to mention that the first 7 pins on the 13 pin plug i have connected , as all colors correspond with pin numbers . its 8 to 13 that I need help to figure out Confused
  
Post #211264813th Jan 2020 8:16 pm
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galwaygreen
 


Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525

United Kingdom 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Loire BlueDiscovery 4

get a converter and you can use both types..simples
  
Post #211266913th Jan 2020 11:24 pm
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jamez79
 


Member Since: 03 Sep 2018
Location: Staffordshire
Posts: 589

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

You might be able to narrow down what some of the wires do by testing them? ie, reverse which will be live when reverse is selected and not when it isn't selected. Indicators, on, off, on, off etc.

Then if you can ID which is which, connect them following a diagram for a 13 pin plug.

I toyed with the idea of just buying a 13 pin and swapping the wires from my 12S and N, but then the wife sold her horse trailer so I didn't bother.

Good luck and hope you get it sorted. Thumbs Up
   
Post #211268514th Jan 2020 7:20 am
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
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United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

https://www.disco3.co.uk/forum/wiring-sche...=red+white
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Post #211274614th Jan 2020 11:31 am
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M3bobby
 


Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857

United Kingdom 

Like I said earlier, save yourself the hassle and risk of blowing your BCM and buy an adapter! Even LR ones new are reasonable, saves hacking looms up and gives you the best of both worlds.

https://www.ebay.co.uk/itm/Range-Rover-Evo...SwQj9dmgys

p.s. if it’s to late, make sure you seal the back of the new connector as it will corrode badly sat where it is and corrosion there will play havoc with tour entire car.
 012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete) 
 
Post #211280714th Jan 2020 3:54 pm
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