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Thread: Calling Auto Elecs - Earthing Main battery.

  1. 31st May 2011, 01:38 PM #1
    Hamish71 Guest

    Calling Auto Elecs - Earthing Main battery.

    I am continuing my prototype D2A Dual battery mount. It puts two optimas in the standard position. In fitting the two batteries I have an issue. The black earth lead will not reach the -ve terminal on the main battery, without undoing the crimp on earth strap where it bolts to the terminal on the chassis. My non auto elec brain says there are two possible options:

    1. extend the lead (remove the stock terminal, extend the cable, leave stock earth strap in place)

    2. extend the earth strap (buy a cheap flat braided earth strap, bolt it to chassis, bolt it to stock earth strap.)

    I like the second one, but am ready to take advice.

    TIA, Hamish 71
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  2. 31st May 2011, 02:15 PM #2
    Mick_Marsh's Avatar
    Mick_Marsh
    Mick_Marsh is offline Swaggie
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    Get a new earth cable. Choose on from the selection they have on the wall at Supercheap, Repco, Autobarn, etc.
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  3. 31st May 2011, 07:12 PM #3
    Hamish71 Guest
    D'oh!....the bleedlingly obvious, Option 3. New lead.

    Thanks.
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  4. 31st May 2011, 07:43 PM #4
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is offline RoverLord Vendor
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    option 4.

    custom fabricate one...

    theres no reason you cant do a negative-negative clamp bridging cable then run an earthing strap off of that.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

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  5. 5th June 2011, 01:56 PM #5
    Hamish71 Guest
    Quote Originally Posted by Blknight.aus View Post
    option 4.

    custom fabricate one...

    theres no reason you cant do a negative-negative clamp bridging cable then run an earthing strap off of that.

    Im not picturing what you mean.....
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  6. 5th June 2011, 02:16 PM #6
    Blknight.aus's Avatar
    Blknight.aus
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    grab 2 earth clamps with the screw terminal on them. like this (they're availalbe with wingut setups) then run a properly crimped eye terminal cable. one from battery negative-battery negative and then another from negative terminal to earth.

    The main advantages of doing it this way is the ease of disconnecting a battery if it goes bad and the ease of disconnecting the earth for repairs/storage/basic antitheft.

    edit image insert
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
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  7. 5th June 2011, 04:28 PM #7
    Hamish71 Guest
    Thanks Dave, I get it.
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