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dave18

Member Since: 11 Jul 2015
Location: Gorleston, Great Yarmouth
Posts: 497

1984 Defender 110 300 Tdi CSW Portofino Red

Should I change my Battery Earth and where should it go to??

Hey peeps finally finished all the mechanical bits on the landy now onto the wiring

Anyways Got two Exide batterys, They are joined by going through an Albright Solenoid which is controled by a switch on the dash the cabling between the batterys is 35mm2. Then my winch and 12v Anderson feeds along with everything else will be connected to the 2nd Battery.

Landrover use 35mm2 Cable which can handle around 240A from what ive read, My winch is a Warrior Apache 13000 which at 10,000lbs pulls about 380A accroding to Warrior. Now im using 50mm2 Cable for my winch as that can handle the Amperage from what I understand.

Now here is the questions
1 - Should I replace my Battery earth cable for 50mm2
2 - Where SHOULD the battery earth be going currently its going to the Gearbox.

19th Nov 2015 7:05pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5843

1999 Defender 110 Td5 SW Caledonian Blue

If its any help, my winch earth is direct back to the battery and therefore you shouldn't need to upgrade to the same mm2 cable for the battery earth.? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

19th Nov 2015 8:35pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Now here is the questions
1 - Should I replace my Battery earth cable for 50mm2
2 - Where SHOULD the battery earth be going currently its going to the Gearbox.

1. yes Battery earth cable for 50mm2

2. Chassis and Gearbox i think

19th Nov 2015 8:36pm

dave18

Member Since: 11 Jul 2015
Location: Gorleston, Great Yarmouth
Posts: 497

Hmm two different answers to be hounest Im leaning towards changing it to 50mm2

Hmm there isnt one coming off the same point of the gearbox to the chassis that the battery connects to !!!

Hopefully got enough spare 50mm2 !!!

19th Nov 2015 9:52pm

Cupboard

Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

2011 Defender 110 Puma 2.4 HT Corris Grey

They're hardly contradictory answers.
One has upgraded the earth by upgrading the link from the battery to the chassis, the other has upgraded it by running a bigger cable from the battery to the winch.

Where do the earths from your winch and Anderson connector go? If you're taking them back to the battery then the current will be through those cables. If you're going back to the chassis, then it will be through the battery-chassis earth link. Depending on which the "main" earth path is for the heavy current draw item will determine whether you need to upgrade anything.

20th Nov 2015 12:33pm

dave18

Member Since: 11 Jul 2015
Location: Gorleston, Great Yarmouth
Posts: 497

Cupboard, Earths for the Winch will be going back to the Battery as for the Anderson's im not 100% sure yet. Anyways got some 50mm today and replaced the main battery to gearbox cable.

One thing I did notice is that she seemed to fire up a lot quicker instead of 2 - 3 seconds it was 1-2 and seemed more powerfull. Maybe just me thou.

I couldnt find the Gearbox to chassis earth thou, Thinking of taking it from the same point as the battery on the gearbox then mount it to one of the Gearbox mount bolts on the chassis.

20th Nov 2015 9:48pm

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