 | Home > Puma (Tdci) > Twin battery install Puma 2.2 - battery negative |
 
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5690  
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I’ve never know one to be too short, but if it was make a new cable direct from battery to chassis. No joint would be my preference
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26th Apr 2022 3:56pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3414  
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For the genuine wheel chock, find the nearest metal recycling bin.
Sorry it is not helpful comment, but similarly it is not a helpful wheel chock. I would not trust it. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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26th Apr 2022 4:08pm |
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| kmac Member Since: 07 Oct 2009 Location: Middlesex Posts: 1309  
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I ran the cable to a chunky bus bar and from there to both batteries.
No issues now for a few years |
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26th Apr 2022 5:51pm |
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| BJH Member Since: 14 Apr 2022 Location: West Wales Posts: 17 
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I can't help you as I'm in the same boat - I am in the process of adding an aux battery to my own Defender. And you are further along than me.
But I'll be interested to see some photos of your install and if you're willing to share any lessons learned. Cheers. |
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29th Apr 2022 12:13pm |
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| UtilityTruck Member Since: 09 Jan 2014 Location: Oxford Posts: 463
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I had this issue, but for me I didn’t really want to replace the factory negative clamp as I really rate it vs the generic aftermarket ones which are easily over tightened.
Unfortunately I couldn’t find a source of the factory style clamp and didn’t want to use a butt joint as I feared it wouldn’t make a great join. So I made up a new 50mm2 cable with aftermarket negative clamp which I soldered on. The other end I took to an M8 crimp which I fastened to the stud on the inside of the lh chassis rail. I left the factory lead in place to provide the ground link between the chassis and gearbox; I could have re-made this as well, but I would not have had space on the stud and would needed to have swapped it for a longer one!  Click image to enlarge 2014 Keswick Utility 2.2 |
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29th Apr 2022 6:03pm |
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| Macca Member Since: 11 Aug 2017 Location: Cambridgeshire Posts: 5
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Thanks to everyone for the inputs. Finally got around to doing the first part of this today. First part being to replace the original (2013) LR battery in readiness for adding second battery, DC-DC charger, etc.
Anyway, the battery negative was indeed too short with the standard arrangement, but with a bit of reorganisation I was able to get it all to fit. Here's a summary of what I had to do.. 1) Change the route of the (factory) negative lead - from the right-most hole/ grommet in the seat box to the middle hole/ grommet in the seat box. Also relocated the positive feed to the drivers side seat box to the left-most hole/ grommet. It's a bit fiddly to do, but not hard. Had to unclip a plastic tie about 6" from the chassis earth point, then there's plenty of scope to re-route this without putting strain on the cable. As others have done on the forum, I replaced the m6 bolt in the negative terminal with a longer one (ground the edges off so it fits into the terminal). 2) Minor modification to the positive/ megafuse terminal. Had to carefully cut off the bottom half of the megafuse cover so that the cable from the alternator enters it from the other side. This was in order to prevent a tight loop/ strain on the alternator cable. Rotated the bit I cut off by 180 degrees and insulation taped it back together. Before..
After..
Next step is to add a second odessey PC1500, a DC-DC charger w/ solar input (CTEK 250 I think, though still considering separate DC-DC charger and solar MPPT) and a fuse box (Blue Sea). |
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15th May 2022 4:38pm |
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