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Loss of 12 volt supply at 12s socket by the tow bar.
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THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4

Thanks for all the diagrams and info which I am sure will enable to sort the problem. Why have I got the problem? --- because whilst sorting out my " through the towing socket" battery charging the needles on my ammeter managed to touch one another. I do not know how I managed it, but one minute I had a full "12v" reading and then zero.
I will let you know which fuse is the culprit (other than me that is!)
  
Post #189136517th Dec 2017 6:47 pm
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OJ
 


Member Since: 01 Oct 2017
Location: Loch Leven
Posts: 701

Scotland 2015 LR4 3.0 SDV6 SE Tech Auto Corris GreyLR4

Navigator wrote:
It might save a lot of faffing if the OP was able to post the reason for thinking the particular feed is not live. Some of this is getting to clever for its own good and only works when it thinks a trailer is plugged in.



Embarassed Ooops sorry Navigator only trying to help Big Cry its not the trailer its the car thats clever, the 12v tow pack relay stops the car battery discharging if the trailers connected and the fridge is on in the tin tent Embarassed
  
Post #189136717th Dec 2017 6:52 pm
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OJ
 


Member Since: 01 Oct 2017
Location: Loch Leven
Posts: 701

Scotland 2015 LR4 3.0 SDV6 SE Tech Auto Corris GreyLR4

THUB wrote:
Thanks for all the diagrams and info which I am sure will enable to sort the problem. Why have I got the problem? --- because whilst sorting out my " through the towing socket" battery charging the needles on my ammeter managed to touch one another. I do not know how I managed it, but one minute I had a full "12v" reading and then zero.
I will let you know which fuse is the culprit (other than me that is!)


We’ve probably all done it at some point, easily done, and easily fixed its got to be fuse 48
Thumbs Up OJ
  
Post #189137017th Dec 2017 6:55 pm
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THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4

Too dark and too cold to go out to garage. Dentist in the morning but will give the result later. Once again thanks for all the input. Very helpful!!
  
Post #189139917th Dec 2017 7:35 pm
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Navigator
 


Member Since: 17 Mar 2010
Location: Conducting yet another of the Risk Manager's dangerous experiments
Posts: 4235

Scotland 2015 Discovery 4 3.0 SDV6 SE Auto Causeway GreyDiscovery 4

OJ-LR4 wrote:

its not the trailer its the car thats clever, the 12v tow pack relay stops the car battery discharging if the trailers connected and the fridge is on in the tin tent Embarassed


Even more complicated as trailer also switches interior lights in certain power conditions. The Caravan Club have a 31 page handout on trailer wiring.

The "up the bum" charging is a lot simpler!
 Always plan ahead - it wasn't raining when Noah started building the Ark.  
Post #189143817th Dec 2017 8:59 pm
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OJ
 


Member Since: 01 Oct 2017
Location: Loch Leven
Posts: 701

Scotland 2015 LR4 3.0 SDV6 SE Tech Auto Corris GreyLR4

“Up the Bum Charging“ Ohhhh you are awful............but I like you Laughing
  
Post #189144017th Dec 2017 9:07 pm
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THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4

It was fuse 48. Thanks for all the help and comments.
  
Post #189203319th Dec 2017 4:46 pm
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OJ
 


Member Since: 01 Oct 2017
Location: Loch Leven
Posts: 701

Scotland 2015 LR4 3.0 SDV6 SE Tech Auto Corris GreyLR4

Thumbs Up well done
  
Post #189211619th Dec 2017 7:38 pm
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