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Fitting towbar electrics
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iam2103
 


Member Since: 24 Apr 2023
Location: Aberdeen
Posts: 4

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Barolo BlackDiscovery 4
Fitting towbar electrics

Hi, I have searched the forum and internet and came across a few different opinions and answers. So looking for some clarification please. I have just recently bought a discovery 4 2013 plate. There is no towbar so I am fitting a towbar and the electrics. I have looked and found videos on how to do this but my question is “ does the landrover then need reprogrammed to tell it there is a towbar and electrics fitted?” As I have read the rear parking sensors need to know when a trailer is on? Please help? Thanks.
  
Post #233444324th Apr 2023 9:19 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

To get the best out of it yes, providing it hasn’t already been done, mine had(factory), it not only disables the rear sensors when trailer electrics are plugged in it also disables high and low automatic suspension settings etc providing you are using a genuine LR D3 or D4 cable adaptor, both will fit.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #233446725th Apr 2023 8:00 am
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iam2103
 


Member Since: 24 Apr 2023
Location: Aberdeen
Posts: 4

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Barolo BlackDiscovery 4

Ok thanks. Will fit it up then take it from there.
  
Post #233446825th Apr 2023 8:06 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Just take extra care threading the cable behind the swinging damper weights, if not done correctly they can damage the cable when swinging Thumbs Up
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #233446925th Apr 2023 8:12 am
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nigethecat
 


Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4145

Ukraine 2016 Discovery 4 3.0 SDV6 Commercial XS Auto Corris GreyDiscovery 4

Make sure you get the ones for a D4 as the D3 has an ever so slightly different fitting... ask me how I know ! Laughing about a 20 minute job once you've done it a few times!
 I want to see the sweets before I get into your windowless van... I'm not stupid!

Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone) 
 
Post #233448425th Apr 2023 11:32 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Fitted the one off my old D3 MY54 onto D4 facelift without any problems, it still on and working after 5 years Thumbs Up
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #233448725th Apr 2023 11:36 am
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iam2103
 


Member Since: 24 Apr 2023
Location: Aberdeen
Posts: 4

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Barolo BlackDiscovery 4

Where is the best place to get the twin electrics from? Thanks.
  
Post #233456725th Apr 2023 9:54 pm
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popsdosh
 


Member Since: 09 Nov 2009
Location: cambs
Posts: 442

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Corris GreyDiscovery 4

Honestly fit 13 pin as its the up to date standard and put a new plug on the caravan if you have twin electrics .No need for adapter cables etc.
  
Post #233459326th Apr 2023 6:19 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Depends what’s on the trailer(s) you are towing.

iam2103: Ebay is cheapest but you may need to be patient, otherwise any good LR factor such as Rimmer Bros, Lincs or Paddock Motors, Matlock.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #233459526th Apr 2023 8:10 am
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nigethecat
 


Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4145

Ukraine 2016 Discovery 4 3.0 SDV6 Commercial XS Auto Corris GreyDiscovery 4

Think I have a wiring kit in the garage somewhere, needs a new socket (13 pin) but otherwise good to go, doesn't come with a wiring diagram though so you'd need to figure out the wire colours and pin numbers... yours for £50 if you want it.. I ran out of time/patience and it was just too cold to be outside trying to wire the thing up in mid January when i needed the trailer.

Drop me a pm if interested..
 I want to see the sweets before I get into your windowless van... I'm not stupid!

Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone) 
 
Post #233461426th Apr 2023 10:08 am
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popsdosh
 


Member Since: 09 Nov 2009
Location: cambs
Posts: 442

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Corris GreyDiscovery 4

M3DPO wrote:
Depends what’s on the trailer(s) you are towing.

iam2103: Ebay is cheapest but you may need to be patient, otherwise any good LR factor such as Rimmer Bros, Lincs or Paddock Motors, Matlock.


Trailer is easier and cheaper to change . 13 pin is standard today so all trailers from factory are 13pin unless specified otherwise.
  
Post #233463626th Apr 2023 11:21 am
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iam2103
 


Member Since: 24 Apr 2023
Location: Aberdeen
Posts: 4

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Barolo BlackDiscovery 4

Hi I have been looking into this, can anyone help with the part number I need for a d4 63 plate. Is it possible to have the 7 pin and 13 pin sockets? If not does anyone know the part number for the 13 pin electrics. Thanks.
  
Post #23354234th May 2023 9:13 am
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Russell
 


Member Since: 24 Aug 2007
Location: Kent
Posts: 10564

United Kingdom 

M3DPO wrote:
To get the best out of it yes, providing it hasn’t already been done, mine had(factory), it not only disables the rear sensors when trailer electrics are plugged in it also disables high and low automatic suspension settings etc providing you are using a genuine LR D3 or D4 cable adaptor, both will fit.


As said here, the basics work but the auto functions do not. This isn't a major issue but can sometimes be annoying. Depends on if you want to fork out to have all functions working on auto or are happy to ignore the rear parking sensors and switch them off by hand when in reverse with a trailer in tow.
 MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club 
 
Post #23354314th May 2023 10:24 am
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popsdosh
 


Member Since: 09 Nov 2009
Location: cambs
Posts: 442

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Corris GreyDiscovery 4

iam2103 wrote:
Hi I have been looking into this, can anyone help with the part number I need for a d4 63 plate. Is it possible to have the 7 pin and 13 pin sockets? If not does anyone know the part number for the 13 pin electrics. Thanks.
Why just get a 13 to seven adaptor and carry it with you all the time a lot cheaper than another wiring harness. A few quid in fact.  
Post #23356215th May 2023 6:14 pm
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Russell
 


Member Since: 24 Aug 2007
Location: Kent
Posts: 10564

United Kingdom 

iam2103 wrote:
Hi I have been looking into this, can anyone help with the part number I need for a d4 63 plate. Is it possible to have the 7 pin and 13 pin sockets? If not does anyone know the part number for the 13 pin electrics. Thanks.


What do you want the 7 pin for is it the twin 7 pin for a caravan or is it just a 7 pin for a trailer.
If the 7 pin for a trailer then fit the 13 pin electrics to car for future proofing and then buy the cheap plug that plugs into a 13 pin and converts it to 7 pin
If it’s a twin 7 pin for caravan go for the 13 pin on the car and then buy the more expensive adaptor to turn the 13 pin into the twin 7 pin for a caravan. This will make the car future proof but also allow the caravan to be towed
 MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club 
 
Post #23356375th May 2023 9:23 pm
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