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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240   
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I can think of two reasons:
1. It's quite crowded at the fuse box end and two connections may not fit. 2. If somebody does cut the cable under the seatbox, you're left with two live bare ends floating around, which is less than ideal. Particularly so if they're left and you don't know about it. 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 |
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6th Feb 2020 4:54pm |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4784 
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I have run a second set of cables. Only small gauge, but rated enough to power all of my security. Its fused so if the cables underneath are chopped and I go to start it then it will blow the fuse and I can start to investigate.
Also if they do chop the cables underneath they'll get a bit of a shock when all the security still works  2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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6th Feb 2020 5:45pm |
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2055 
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Can you not just wire it so they stay live when hacked and give them a belt hopefully.........
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6th Feb 2020 8:19pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16899 
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The only downside I can see for leaving the old is the significant fire risk of cut live ends dangling underneath. It'd be a shame to deter the thief only to have the vehicle incinerate itself.
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6th Feb 2020 8:46pm |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4784
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Would the main fuse not blow with the enormous current draw? 2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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6th Feb 2020 9:10pm |
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 996  
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There is no fuse in the live feed from battery to fuse box! A serious omission in my view. A fuse is still on my to do list... 
I think Darren's reason #2 is justified. Even if you put fuses at both ends, they would have to be >>60 Amps - maybe enough to cause a fire underneath due to fuel, oil, ... |
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6th Feb 2020 10:34pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6486 
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If you want to leave the original cable in place so it appears that you haven’t moved it, just disconnect both ends?
 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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6th Feb 2020 11:00pm |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4784
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I'm pretty sure all 2007 onwards defenders have a 500A fuse on the battery terminal? But as Martin suggested, leaving them in place disconnected might be a good idea. I think it would make them believe they'd disarmed the alarm, only to get a surprise when they open a door/bonnet and it goes off. Might be enough to spook them or at least alert the owner  2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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6th Feb 2020 11:43pm |
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| The Fox Member Since: 24 Mar 2014 Location: Shrewsbury Posts: 93 
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Cheers all.
Fitted but disconnected sounds like the way to go. |
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7th Feb 2020 9:16am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16899
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It's easy to set fire to a vehicle without blowing even a 60 Amp fuse. A 500 Amp megafuse isn't really a lot of use for protection since things will be really, really bad long before it blows.
You could always fit an extra alarm connected to the redundant exposed link cable that triggers if it is cut. |
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7th Feb 2020 10:21am |
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 996
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The live feed is NOT connected to the 500A fuse! The wire goes off the battery terminal before the fuse. The 500A is only for the starter/alternator feed. Click image to enlarge But anyway, leaving the original feed disconnected seems the way to go. Or you could even use it to trigger something when cut... silent alarm message, siren, blinding lights, tear gas...
(edit: just saw blackwolf had the same idea  if not as drastic ) |
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7th Feb 2020 10:43am |
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| The Fox Member Since: 24 Mar 2014 Location: Shrewsbury Posts: 93
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This has got me thinking - I could fuse the old feed at 0.5A and fit a normally-closed relay in series to a battery-powered siren which charges from this circuit. Cut the under-vehicle cable = 120db of noise... |
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12th Feb 2020 10:39am |
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| X4SKP Member Since: 29 Nov 2013 Location: Berkshire Posts: 2289 
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Exactly… I know 'someone' who has done exactly this 
Why this is good, I would argue the best route even if using the security kit and not a DIY approach is that if you are a victim of this design failure by JLR  and the cable is in place where expected
then is cut... this may help with ensuring the alarm is triggered when entering. SKIP https://www.defender2.net/forum/topic83242.html |
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12th Feb 2020 10:55am |
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 996
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Plus this: https://translate.google.de/translate?sl=d...em-Furie-5 |
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12th Feb 2020 10:29pm |
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