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D3 towing electrics, bit of advice please.
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Sorry to pester,
I’ve just tested continuity, and five of the seven pins show as earth. Two show nothing, but of the five that show earth two also show current when tested, on for brake light one for rear lights. I don’t know if that makes sense, but any advice would be great,
  
Post #20664926th Jul 2019 3:17 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

If your doing continuity checks on resistance most will show connection thru the car bulbs to earth.

Was it the indicators that did not read anything ?
  
Post #20665226th Jul 2019 6:17 pm
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Thanks Admirable
Will keep trying
  
Post #20665436th Jul 2019 8:17 pm
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Hi Pete,
Nothing I can see, will get a test lamp set up and see what’s going on tomorrow. None of the wiring diagrams seem to match up. Thanks tho.
  
Post #20665466th Jul 2019 8:22 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

here are the D3 colours inside the car
incase this helps

D3 Colour.....7pin Socket black

Yellow.............Yellow 1 Ind L
Red/Yellow......Blue 2 Fog
Chassis stud...White 3 (earth)
Green.............Green 4 Ind R
Brown..............Brown 5 and Black 7 Tail lights
Green/Purple....Red 6 Brake


Caravan Socket
D3 Colour.....7pin Socket white/grey

Green/brown.....Yellow 1 Reversing lights
Chassis stud.....White 3 (earth)
Green/Brown(thick).....4 Green Power
Red/white or Red........6 Red Ignition power.
Chassis stud......Black 7 (earth)
  
Post #20665556th Jul 2019 9:00 pm
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Oswiperus
D3 Decade 


Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1590

United Kingdom 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

Here's a pic of the fuses that Pete mentioned, do you have these? If not then that part of the loom may not be genuine. The two socket looms should plug in behind the rear light. They plug into the loom with the fuses.


 Stu

2016 D4 Landmark current
2022 Defender D300 SE Gone Sad
D4 2014 XS Commercial - Gone Sad
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone Sad
D2 1999 TD5 E white - current 
 
Post #20666157th Jul 2019 10:04 am
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

I don’t have the fuses, but I’m sure it’s genuine. Going to check it all now will report back. Are the fuses part of the car, or the loom?
  
Post #20666347th Jul 2019 12:22 pm
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Oswiperus
D3 Decade 


Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1590

United Kingdom 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

Fuses are part of the genuine loom. Twin electrics should come in 3 parts, the two sockets with their loom and plugs and the loom with fuses which plugs in inside the cubby hole and passes out behind the rear light where it plugs into the other two.
 Stu

2016 D4 Landmark current
2022 Defender D300 SE Gone Sad
D4 2014 XS Commercial - Gone Sad
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone Sad
D2 1999 TD5 E white - current 
 
Post #20666377th Jul 2019 12:51 pm
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

The looms I have are in three pieces, and all have Land Rover stickers on, but there are no fuses. However I have traced everything back and found nothing really matched. I’ve bodged it together at the moment, and it’s now working

I know it’s a bit rough looking, I will do it properly before I need to use it, and have disconnected it.
Still can’t understand why it wasn’t right as all the plugs fitted, and everything was the right length, but there we go, even the trailer light comes on the dash when indicating. Thanks for everyone’s input, would have struggled otherwise
  
Post #20666667th Jul 2019 3:55 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

glad you got it working.

what are the disconnected ones ?

Click image to enlarge
  
Post #20666937th Jul 2019 5:04 pm
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Lee Trinder
 


Member Since: 12 Aug 2018
Location: Henley in arden
Posts: 515

2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Not sure, they must be to do with the caravan setup. The car plug with six pins I assumed would be the trailer hookup + the earth would make seven. But the other plug with three pins in were the indicators and permanent live. I only needed four connections, brakes, lights and two for the indicators, very strange but at least it works. How would you recommend doing the connections properly? Solder and heat shrink, or another? Thanks again. Lee
  
Post #20667127th Jul 2019 6:41 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

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

Hi

Ref the terminals , I managed to find them a little while back

https://www.disco3.co.uk/forum/tow-electri...hlight=12s


   
Post #20667187th Jul 2019 6:57 pm
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Skynet
 


Member Since: 23 Jul 2014
Location: Melksham, Wiltshire
Posts: 868

United Kingdom 2016 Discovery 4 3.0 SDV6 SE Auto Alaska WhiteDiscovery 4

You need the Haynes manual with the cable routing for sockets in
 Dave
D3 2006 HSE, Cairns Blue - gone
D4 2016 SE, White

Wessex 4x4 Response
http://www.wessex4x4response.org.uk/ 
 
Post #20667377th Jul 2019 8:27 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I would use red bullet crimps. male and female.

you can always swap them around if required then!

https://www.ebay.co.uk/itm/Red-Assorted-Fe...f878648664


or some blue ones if the wires are thicker

make sure both left and right night lights are connected
  
Post #20667387th Jul 2019 8:47 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

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

Hope u didn’t mind just copied that link Pete , thks

Very good prices Bow down
   
Post #20667627th Jul 2019 10:05 pm
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