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Strange Trailer lighting issue
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sailorboi
 


Member Since: 26 Oct 2012
Location: Bristol
Posts: 2020

United Kingdom 2007 Discovery 3 TDV6 XS Auto Java BlackDiscovery 3

Old topic I know but I finally got around to doing this using the diagram and worked a treat.

Only issue I have is that the trailer symbol on the dash only lights when left turn signal is on. When right turn signal is on you get no trailer symbol in dash but the turn signal on trailer is working as it should.

Is this normal? Or have others got the indication in dash when turning both ways?

Many thanks for the diagram and was all done for a couple of £ Thumbs Up
 07 Java Black TD V6 D3, EGRs Blanked, Tow bar, Full dog guard & divider, LED Spots , DRLs, GG ATs, RLD Sump guard, RLD Spare Wheel Protector, D4 LED Rear Lights, Limo tints on boot and Midnight tint on rear windows, Kenwood screen with Garmin nav, Rear cameras, D4 Steering wheel with flappy paddles, T-max split charge system, Tree sliders, Prospeed roof rack & Ladder, Alisport fast road inter cooler,


Massey Ferguson 35x
Sankey Narrow Track Camping Trailer (Gone but to a great home) 
 
Post #232342820th Jan 2023 10:20 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

Yes, it should indicate both ways.
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #232342920th Jan 2023 10:23 am
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sailorboi
 


Member Since: 26 Oct 2012
Location: Bristol
Posts: 2020

United Kingdom 2007 Discovery 3 TDV6 XS Auto Java BlackDiscovery 3

That’s what I thought but got no idea why?

With my other trailer that uses bulbs it does as normal.

Resistors are all in the same way and relays all working.

Any ideas?
 07 Java Black TD V6 D3, EGRs Blanked, Tow bar, Full dog guard & divider, LED Spots , DRLs, GG ATs, RLD Sump guard, RLD Spare Wheel Protector, D4 LED Rear Lights, Limo tints on boot and Midnight tint on rear windows, Kenwood screen with Garmin nav, Rear cameras, D4 Steering wheel with flappy paddles, T-max split charge system, Tree sliders, Prospeed roof rack & Ladder, Alisport fast road inter cooler,


Massey Ferguson 35x
Sankey Narrow Track Camping Trailer (Gone but to a great home) 
 
Post #232343020th Jan 2023 10:24 am
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rrhool
 


Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398

United Kingdom 2007 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

It only senses the extra load of the trailer lights to trigger the trailer indicator. Perhaps your resistors are not quite resistive enough?
 Richard


D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.



Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone 
 
Post #232343520th Jan 2023 10:39 am
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sailorboi
 


Member Since: 26 Oct 2012
Location: Bristol
Posts: 2020

United Kingdom 2007 Discovery 3 TDV6 XS Auto Java BlackDiscovery 3

Maybe but odd that one side works and not the other.

Maybe a dodgy resistor or not connected properly Big Cry

I got the resistors in the diagram but maybe not enough.

I will have to double check I think. Thanks
 07 Java Black TD V6 D3, EGRs Blanked, Tow bar, Full dog guard & divider, LED Spots , DRLs, GG ATs, RLD Sump guard, RLD Spare Wheel Protector, D4 LED Rear Lights, Limo tints on boot and Midnight tint on rear windows, Kenwood screen with Garmin nav, Rear cameras, D4 Steering wheel with flappy paddles, T-max split charge system, Tree sliders, Prospeed roof rack & Ladder, Alisport fast road inter cooler,


Massey Ferguson 35x
Sankey Narrow Track Camping Trailer (Gone but to a great home) 
 
Post #232343820th Jan 2023 11:05 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I’m not sure it really matters ?
As long as one side works, the car knows a trailer is on the back.
  
Post #232344620th Jan 2023 11:25 am
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sailorboi
 


Member Since: 26 Oct 2012
Location: Bristol
Posts: 2020

United Kingdom 2007 Discovery 3 TDV6 XS Auto Java BlackDiscovery 3

It is separate because if a lamp is gone when using traditional it doesn’t work on the dash on the side the lamp is out Thumbs Up
 07 Java Black TD V6 D3, EGRs Blanked, Tow bar, Full dog guard & divider, LED Spots , DRLs, GG ATs, RLD Sump guard, RLD Spare Wheel Protector, D4 LED Rear Lights, Limo tints on boot and Midnight tint on rear windows, Kenwood screen with Garmin nav, Rear cameras, D4 Steering wheel with flappy paddles, T-max split charge system, Tree sliders, Prospeed roof rack & Ladder, Alisport fast road inter cooler,


Massey Ferguson 35x
Sankey Narrow Track Camping Trailer (Gone but to a great home) 
 
Post #232344720th Jan 2023 11:31 am
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Discovery3tm
 


Member Since: 16 Jul 2013
Location: Kempton Park, Gauteng
Posts: 54

South Africa 2008 Discovery 3 4.4 V8 HSE Auto Zermatt SilverDiscovery 3

smartlogicelectrical.com.au

Easiest way to sort the problem - highly recommended.
  
Post #232345220th Jan 2023 11:56 am
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sailorboi
 


Member Since: 26 Oct 2012
Location: Bristol
Posts: 2020

United Kingdom 2007 Discovery 3 TDV6 XS Auto Java BlackDiscovery 3
Sorted!

All fixed. It turned out to be a dodgy solder in the resistor from the factory so was intermittent. All swapped out now.

I put all the stuff neatly in an aluminium box to act as a heat sink if there is prolonged use of the indicators.

As much as the boxes you by look great I have done this to all three of my trailers today and it would not have been cost effective to buy three or fit it to the car as I have other tow vehicles.

Works great and thanks for the simple drawing. Now to put.l the new floor in Thumbs Up


 07 Java Black TD V6 D3, EGRs Blanked, Tow bar, Full dog guard & divider, LED Spots , DRLs, GG ATs, RLD Sump guard, RLD Spare Wheel Protector, D4 LED Rear Lights, Limo tints on boot and Midnight tint on rear windows, Kenwood screen with Garmin nav, Rear cameras, D4 Steering wheel with flappy paddles, T-max split charge system, Tree sliders, Prospeed roof rack & Ladder, Alisport fast road inter cooler,


Massey Ferguson 35x
Sankey Narrow Track Camping Trailer (Gone but to a great home) 
 
Post #232388923rd Jan 2023 3:48 pm
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sailorboi
 


Member Since: 26 Oct 2012
Location: Bristol
Posts: 2020

United Kingdom 2007 Discovery 3 TDV6 XS Auto Java BlackDiscovery 3

Having now sorted the indicators I thought I would add a reverse light so I can see Rolling with laughter

How ever it seems pin 8’on my 13pin electrics is not actually live.

Has anyone got an idea why? I have checked the fuses in the back and all ok. All three plugs are connected for the 13pin loom.

Does the D3 MY07 have this? I assume it does/ sure it did when I had 7 pin N&S.

Cheers
 07 Java Black TD V6 D3, EGRs Blanked, Tow bar, Full dog guard & divider, LED Spots , DRLs, GG ATs, RLD Sump guard, RLD Spare Wheel Protector, D4 LED Rear Lights, Limo tints on boot and Midnight tint on rear windows, Kenwood screen with Garmin nav, Rear cameras, D4 Steering wheel with flappy paddles, T-max split charge system, Tree sliders, Prospeed roof rack & Ladder, Alisport fast road inter cooler,


Massey Ferguson 35x
Sankey Narrow Track Camping Trailer (Gone but to a great home) 
 
Post #232414025th Jan 2023 5:40 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

fuse for reverse lights is behind the glovebox. (1 for car, 1 for trailer)

Need to ensure the thin green/brown ? wire is connected to the socket and live when in reverse
  
Post #232414225th Jan 2023 5:59 pm
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