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muddypaws



Member Since: 22 Jan 2013
Location: Leicestershire
Posts: 122
England 2009 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
Puma wiring

Click image to enlarge
Does anyone know what this white wire is that it bolted on top off the earth terminal?

Stupid bit of design really as there is so little thread on the earth post to secure it, it has come loose & I cannot tighten it without the thread stripping!

Thanks v much Richard

Defender 90 SVX
Post #822285 30th Mar 2020 4:33pm
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Martin
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Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6479
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Not original. What's no longer working? Smile  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #822287 30th Mar 2020 4:37pm
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muddypaws



Member Since: 22 Jan 2013
Location: Leicestershire
Posts: 122
England 2009 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
Not tried yet Martin but that will be my next step.

It comes from the loom so I'm a bit puzzled. I don't think there is anything non-original on the vehicle unless its something to do with the tow bar.

I was just going to find another earth in the battery box to use but doesn't seem much of an option at first glance.

Thanks for your wisdom!



Click image to enlarge Richard

Defender 90 SVX
Post #822295 30th Mar 2020 5:11pm
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DuncanS



Member Since: 07 Dec 2013
Location: Cumbria
Posts: 295
United Kingdom 2008 Defender 110 Puma 2.4 USW Santorini Black
That yellow relay is an addition from the non bog standard options (even an XS) so its likely being used for spotlights or something heated perhaps? The white wire shown there is the relay coil earth so it'll be prohibiting it from operating. If it was tow bar it would be related to 13 pin electrics and not 7 pin as there is no call for a single relay on 7 pin.

If you have an SVX with the two lights in the cubby box, it may well be those that the wiring is for, as I haven't seen anything on the normal wiring diagrams to indicate the option on my 110 or any of the others I've worked on. North Cumbria Search and Rescue - Team Leader
Post #822298 30th Mar 2020 5:16pm
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discomog



Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2495
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Santorini Black
As per Martin's post, I'd be tempted to switch everything on and make sure it's all working. If everything is working I'd be tempted to tape up the eyelet and leave it. Defender 90XS SW
Mini Countryman Cooper S
Morgan Plus 8
Post #822321 30th Mar 2020 6:31pm
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Martin
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Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6479
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Aaaah of course it's the 13 pin/12S towing electrics ground.

It "should" go to a stud on the inner side of the main chassis rail - see step 32 below

Instructions: https://www.defender2.net/gallery/albums/u...20TDCi.pdf

The ground terminal clamp isn't designed to have extra terminals attached, unlike the positive which has threaded holes. You will have an extra positive wire going off to that yellow relay as well.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #822324 30th Mar 2020 6:33pm
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muddypaws



Member Since: 22 Jan 2013
Location: Leicestershire
Posts: 122
England 2009 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
The plot thickens!

No sign of old spotlights & no lights in the cubby box

The seats are heated as is the screen on my SVX; will need to do some more investigation but if it is the relay coil earth then I'll have to find an alternative earthing point so it will start. Richard

Defender 90 SVX
Post #822325 30th Mar 2020 6:35pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6479
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
See above ^^ Smile  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #822328 30th Mar 2020 6:43pm
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muddypaws



Member Since: 22 Jan 2013
Location: Leicestershire
Posts: 122
England 2009 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
Thank you to all - nice to have a little bit of detective work during such restrictive times!

I'll use the chassis rail ground as suggested.

The original reason for delving into the battery box was to fix a remote terminal for my CTEK so I'll have to find another suitable earth for that.

- will keep me busy tomorrow Wink Richard

Defender 90 SVX
Post #822346 30th Mar 2020 7:24pm
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 990
Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Re: Puma wiring
muddypaws wrote:

Stupid bit of design really as there is so little thread on the earth post to secure it, it has come loose & I cannot tighten it without the thread stripping!


It's a T-shaped bolt head from underneath, right? I replaced the bolt with a longer one and filed the head to shape.
Post #822391 30th Mar 2020 9:30pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16868
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I replaced my battery terminal clamps with effective ones!
Post #822399 30th Mar 2020 9:46pm
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muddypaws



Member Since: 22 Jan 2013
Location: Leicestershire
Posts: 122
England 2009 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
Re: Puma wiring
macfrank wrote:
muddypaws wrote:

Stupid bit of design really as there is so little thread on the earth post to secure it, it has come loose & I cannot tighten it without the thread stripping!


It's a T-shaped bolt head from underneath, right? I replaced the bolt with a longer one and filed the head to shape.


Sounds like a plan Very Happy Richard

Defender 90 SVX
Post #822436 31st Mar 2020 7:46am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240
United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
I did the same thing - original bolt on left and new adapted one on right:


Click image to enlarge Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #822438 31st Mar 2020 8:01am
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discomog



Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2495
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Santorini Black
muddypaws wrote:

The original reason for delving into the battery box was to fix a remote terminal for my CTEK so I'll have to find another suitable earth for that.



As your Defender is fitted with a tow bar have you thought of connecting your CTEK through the towing socket. Martin has adaptors for both 7 and 13 pin Defender 90XS SW
Mini Countryman Cooper S
Morgan Plus 8
Post #822440 31st Mar 2020 8:23am
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muddypaws



Member Since: 22 Jan 2013
Location: Leicestershire
Posts: 122
England 2009 Defender 90 Puma 2.4 SVX Station Wagon Santorini Black
Ah - another plan. I love this website!

Will need to sort the earth first though Wink Richard

Defender 90 SVX
Post #822455 31st Mar 2020 9:31am
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