 | Home > Puma (Tdci) > Charge battery through 13 pin trailer socket |
 
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3409   
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I used to have the same problem with the alarm, from lack of use. But I have a 7 pin, so no permanent positive available.
Since I have working lights, and an additional fuse box with spare connections in the battery compartment, I rigged a wire with a 2 pin female connector, fused at 10A as the battery charger I use max is 8A. The battery charger crocodile clips were cut off, and male 2 pin connector attached. This way, I can easy charge the battery (have a smart charger, so technically I can leave it connected 247) without the need of pulling the seat base off. The crocodile clips that were chopped off also got a 2 pin female connector, so I can use the charger on any other car. To answer your question, I think you should use pin 9 for +12V. You can also check with a meter (or if you do not have a meter, just a 12V bulb with 2 wires attached) to ensure you have 12V between pin 3 and 9. With the bulb trick, you lack confirmation of the polarity though. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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27th Nov 2021 5:39pm |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3639  
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Martin does one in his shop, see shop above DEFENDER 90 TDCI XS,
I hope everyone is well and your land rovers make you happy |
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27th Nov 2021 5:41pm |
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| nosnibod Member Since: 15 Aug 2007 Location: West Midlands Posts: 368 
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I use Martins one too, with a Ctek charger, and it works perfectly to keep the battery topped up. during lockdown, I managed to completely discharge the battery - to the point where the central locking wouldn’t work. Plugging in the Ctek via Martins 13 pin plug revived the battery perfectly. Dave
Green Goddess - 1998 Defender 110 300tdi |
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27th Nov 2021 5:47pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Due to the global connector and electronics (semiconductor) supply issues we have exhausted our stock of parts.
Therefore we are unable to take any new orders at this time, all existing orders have been shipped but uncertain lead times on components mean it is unfair to new customers to take orders without a firm delivery date. Please email us with enquiries info@fnltd.co.uk Futuranet Ltd |
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27th Nov 2021 5:48pm |
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| carpetsauce Member Since: 19 Mar 2021 Location: Essex Posts: 58
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Thanks all for your input. Quick and informative.
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28th Nov 2021 11:21am |
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2140 
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And if you already have a suitable plug but not the wring what is the correct answer to the original posters question??
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28th Nov 2021 8:35pm |
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| nosnibod Member Since: 15 Aug 2007 Location: West Midlands Posts: 368
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Pin 9 is direct to battery. Easy way to check is with a volt meter of course and makes sure that the wiring is correct and that the 20A fuse hasn’t blown. Dave
Green Goddess - 1998 Defender 110 300tdi |
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28th Nov 2021 9:13pm |
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2140
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So basically pin 9 for 12V+ and pin 3 for Earth........
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29th Nov 2021 8:47pm |
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| discomog Member Since: 09 May 2015 Location: Notts/Lincs Border Posts: 2526 
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I connect my charger through pin 9 (12v+) and pin 13 (earth) Defender 90XS SW
Mini Countryman Cooper S Morgan Plus 8 |
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29th Nov 2021 9:24pm |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018 
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I've recently started to question charging via the towing socket rather than direct connections to the battery.
I've seen signs of increased galvanic corrosion in the usual places and wonder if having the vehicle charger wired this way is actually a factor? My vehicle is left permanently plugged into a CTEK charger when parked up; and you can see the corrosion oozing from the unpainted rivets behind the rear door. Clean them up and the deposits appear again over a period of time.  Click image to enlarge Last edited by Supacat on 3rd Dec 2021 6:53am. Edited 1 time in total |
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30th Nov 2021 9:52am |
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| Rashers Member Since: 21 Jun 2015 Location: Norfolk Posts: 3484 
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I have heard of similar issues on Narrowboats plugged into shore lines, Supacat.
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30th Nov 2021 10:35am |
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| discomog Member Since: 09 May 2015 Location: Notts/Lincs Border Posts: 2526
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Indeed, galvanic corrosion is a problem on boats connected to onshore power and some owners fit galvanic isolators which reduce rather than eliminate corrosion. I understand you can totally eliminate it but then that type of isolator is very expensive.
Back to Defenders, like Supacat I keep mine connected to a Ctek when parked and haven't noticed any corrosion like that shown in the photo. I will however be having a close look at it  Defender 90XS SW
Mini Countryman Cooper S Morgan Plus 8 |
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30th Nov 2021 11:22am |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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Discomog ~ how is your CTEK connected?
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30th Nov 2021 11:25am |
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| discomog Member Since: 09 May 2015 Location: Notts/Lincs Border Posts: 2526
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Through the 13 pin socket via pin 9 and pin 13 Defender 90XS SW
Mini Countryman Cooper S Morgan Plus 8 |
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30th Nov 2021 11:26am |
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