Jamiehol
Member Since: 13 Nov 2015
Location: Ipswich
Posts: 347
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| Rear Anderson connector - How Much Cable |
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I know a few folks have done this but I’m going to put an Anderson connector by my Towbar electrics to power my trailer winch.
For those that have done it do you know how much cable you used to get from the engine bay to the Towbar electrics?
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 25th Jan 2021 12:06 pm |
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loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 600
  
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About 6m depending on how you route it.
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| 26th Jan 2021 5:35 am |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
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You only need to run the positive feed back, the earth can go straight onto the chassis at a good earthing point
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| 26th Jan 2021 7:28 am |
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Jamiehol
Member Since: 13 Nov 2015
Location: Ipswich
Posts: 347
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loanrangie wrote:About 6m depending on how you route it.
Thanks for that.
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| 26th Jan 2021 8:00 am |
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Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
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aja4x4 wrote:You only need to run the positive feed back, the earth can go straight onto the chassis at a good earthing point
every winch supplier advices stricktly, to wire minus/earth directly to the battery, NOT through chassis
seems logic to me, given the possible amps flow with winching   Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
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| 26th Jan 2021 6:59 pm |
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Jamiehol
Member Since: 13 Nov 2015
Location: Ipswich
Posts: 347
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Yes I’m going to run both positive and negative back to the battery having read similar winch manufacturer instructions in the past.
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| 26th Jan 2021 7:02 pm |
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Trailered Movements
Member Since: 16 Jan 2020
Location: East/West Sussex Coast Borders
Posts: 1198
 
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Can anyone explain why the vehicle chassis is not a good enough earth for this application?
It is a genuine question, and not an argumentative starter, as I have on what I thought was an informed source, used the chassis as my earth.
Thanks.
Dave 2011 Discovery 4 Commercial SDV6 (Gone)
2010 RRS TDV8 (Gone)
1980 OBLIC 4.0ltr Range Rover (went a long time ago)
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| 26th Jan 2021 11:07 pm |
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Jamiehol
Member Since: 13 Nov 2015
Location: Ipswich
Posts: 347
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From my limited reading on the subject there is a suggestion/theory that if you use the chassis then in a certain circumstances you could end up taking ground path through another electrical component with damaging consequences.
Worth noting if you watch the Powerful UK vid on the new Defender winch install the ground is connected to the point on the body where what looks like the engine earth connects to.
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| 26th Jan 2021 11:18 pm |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
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If the earth wiring to the chassis from the battery is substatial enough you wont have any issues
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| 26th Jan 2021 11:34 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12709
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But we've had several posts recently involving failed earth straps, so perhaps worth considering? .
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 26th Jan 2021 11:41 pm |
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garrycol
Member Since: 06 Dec 2010
Location: Canberra
Posts: 1115
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Remember if you have to jump start your car LR say not to pout the negative jump led on the - tive side of the battery but on the earth stud on the body just in front of the battery - so the body is good enough fore the earth.
I have done exactly what you are asking about - I have run a heavy +ive cable from the battery along the top of the chassis to the passenger side electrical spot next the the tow point. The earth is bolted to the body (not the chassis) under the boot area. I have had my anderson plug there for 10 years no issue.
However running an electric winch some 9m from the battery is not a good idea - the cable you will need over that distance is going to be huge - bigger than welding cables - also you cannot use a "normal" plug you will need one of the big red ones - a winch on full load may pull up to 400 amps - why not put a battery in the trailer and then use what you propose to charge that battery.
Garry
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| 27th Jan 2021 1:11 am |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
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Idealy you would also have a second battery
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| 27th Jan 2021 7:27 am |
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Jamiehol
Member Since: 13 Nov 2015
Location: Ipswich
Posts: 347
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garrycol wrote:
However running an electric winch some 9m from the battery is not a good idea - the cable you will need over that distance is going to be huge - bigger than welding cables - also you cannot use a "normal" plug you will need one of the big red ones - a winch on full load may pull up to 400 amps - why not put a battery in the trailer and then use what you propose to charge that battery.
Garry
Yes I appreciate it is going to need some substantial cable I’ve already done some voltage drop calculations 
I will also be putting a battery on the trailer although time constraints mean it hasn’t happened, however I need a back policy as I don’t have any means of keeping the battery on the trailer charged as I don’t have the ability to keep it charged where it is stored.
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| 27th Jan 2021 7:57 am |
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Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
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aja4x4 wrote:Idealy you would also have a second battery
euhh yes and no.... for winching you need a typical "starter" battery, because of the CCA involved when winching.. "most"auxillary battery's are deepcycle battery's and there fore not very good for winching...
you can everyting make to "work" but i suggest to do it the proper way if big currents, safety and longlivity are important...
i always make a difference between "roadside"/emergency constructions and lasting constructions.. both are needed sometimes regarding on circumstances... Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
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| 28th Jan 2021 11:59 am |
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