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Fuse 31 in glove box keeps blowing when trailer plugged in
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Kitetraveller
 


Member Since: 31 Dec 2018
Location: Brittany
Posts: 95

France 2012 Discovery 4 3.0 SDV6 HSE Auto Stornoway GreyDiscovery 4
Fuse 31 in glove box keeps blowing when trailer plugged in

Hi all, MY2011 HSE D4 keeps blowing the ‘Trailer side lights’ fuse whenever any light board is plugged in, LED or incandescent bulbs. The car has a 13 pin socket fitted.

Trailer Indicators, fog and brake lights work on all combinations. No tail lights, number plate lights or front trailer running lights.

I have tried both my trailers, 1 LED and 1 incandescent, an LED trailer board from a friend, and an incandescent trailer board from a friend.
All these work on both friends vehicles, but all have the same issue on mine.
These were a combination of 13 pin plugs and 7 pin plugs going through an adaptor.

Has anyone come across a common issue with wiring or connections for the trailer side lights that could help me narrow things down a bit.

I believe all the lights worked about 4 years ago, but have not done any towing since then, and now this issue.

All help, fault finding tips, guidance and photos greatly appreciated.
  
Post #237150420th Jun 2024 2:42 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14047

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi

I wonder if a wire has frayed causing a short, might be worth unplugging the tow loom and checking for any bad wires, also ensuring the pins arnt bad , bent or any corrosion over the years
Within the plug or loom itself

Hope that helps
   
Post #237150720th Jun 2024 3:15 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14047

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Plus just double checked and it say for fuse 31 is

Fuse 31- 5 amps

2009-2014: Rain sensor, rear view camera
2014-2016: Rain sensor, Auxiliary lamp switch.
   
Post #237150820th Jun 2024 3:20 pm
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Kitetraveller
 


Member Since: 31 Dec 2018
Location: Brittany
Posts: 95

France 2012 Discovery 4 3.0 SDV6 HSE Auto Stornoway GreyDiscovery 4

Sorry, bad day!
Fuse 27, 10amp.
  
Post #237152120th Jun 2024 6:37 pm
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Kitetraveller
 


Member Since: 31 Dec 2018
Location: Brittany
Posts: 95

France 2012 Discovery 4 3.0 SDV6 HSE Auto Stornoway GreyDiscovery 4

Many thanks!
I can take the plug apart and check.

Any idea where the loom comes from/goes to please?

Cheers again👍

gstuart wrote:
Hi

I wonder if a wire has frayed causing a short, might be worth unplugging the tow loom and checking for any bad wires, also ensuring the pins arnt bad , bent or any corrosion over the years
Within the plug or loom itself

Hope that helps
  
Post #237152220th Jun 2024 6:38 pm
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Jamiehol
 


Member Since: 13 Nov 2015
Location: Ipswich
Posts: 365

United Kingdom 

The towing loom comes out of the car behind the rear light on the passenger side on a UK car then runs along the back of the bumper.

The genuine LR looms are in two parts with the connectors just below the rear light on the outside.
  
Post #237153020th Jun 2024 7:24 pm
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Kitetraveller
 


Member Since: 31 Dec 2018
Location: Brittany
Posts: 95

France 2012 Discovery 4 3.0 SDV6 HSE Auto Stornoway GreyDiscovery 4

Thank you, thats really helpful👍👍
  
Post #237154620th Jun 2024 10:36 pm
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itsaguything
 


Member Since: 20 Dec 2023
Location: Manotick, On
Posts: 222

Canada 2015 LR4 3.0 SCV6 HSE Lux Auto Aintree GreenLR4

and with the connections precariously close to the mounting and storing of the tow hitch, are you certain nothing has been damaged?
Cheers
 2015 LR4 HSE Lux Aintree Green
2013 LR2 HSE Radiance Red
2007 XKR Jaguar Racing Green
2005 XJR Jaguar Racing Green
2002 S-Type R British Racing Green 
 
Post #237167322nd Jun 2024 2:52 pm
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Kitetraveller
 


Member Since: 31 Dec 2018
Location: Brittany
Posts: 95

France 2012 Discovery 4 3.0 SDV6 HSE Auto Stornoway GreyDiscovery 4

Ah, now then, I need to go and have a look.
The tow hook has been installed for the past 6 years, so not likely to be a recent damage, but I do have jump leads and other bits rattling around in there, so well worth a look👍

Thankmyou for the suggestion.
Cheers.
  
Post #237169122nd Jun 2024 5:59 pm
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itsaguything
 


Member Since: 20 Dec 2023
Location: Manotick, On
Posts: 222

Canada 2015 LR4 3.0 SCV6 HSE Lux Auto Aintree GreenLR4

cheers!
 2015 LR4 HSE Lux Aintree Green
2013 LR2 HSE Radiance Red
2007 XKR Jaguar Racing Green
2005 XJR Jaguar Racing Green
2002 S-Type R British Racing Green 
 
Post #237187626th Jun 2024 12:59 am
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