how to wire up a second battery and split charge relay
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  1. #1
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    how to wire up a second battery and split charge relay

    right i'm starting my MK3 astravan project, and i'm ply-lining and then carpeting the back, the plan is to have 4 6x9s in the roof, powered from an amp, and some extra lighting in the back too, as its gonna be a bit of a camper so instead of flattening the normal battery, i'm gonna put a second leisure battery in the back to power the stereo, amp and interior lighting from. which will obviously need charging, so....

    my question: how do you wire up a split charge relay? what size cables will i need running to it? and is there anything special i need?

    ta
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    Re: how to wire up a second battery and split charge relay

    Just take a look around for caravan split charge systems. There are plenty out there plus all the info you could want about fitting them

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    Re: how to wire up a second battery and split charge relay

    yeah i thought they were fairly common caravan things. one of the guys at work is big into caravans (built his own out of a sprinter, its lush inside), so i'll ask him. cheers for that =)
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    Re: how to wire up a second battery and split charge relay

    if you buy a split charge relay it will have wiring diagram with it.
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    Re: how to wire up a second battery and split charge relay

    a split charge relay is JUST A relay - high amps though.

    2 large terminals connect both batteries

    1 terminal Earth, the other connect to the Blue/White wire from Alternator to battery dash light
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    MIGWeb User J Sabo's Avatar
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    Re: how to wire up a second battery and split charge relay

    New Mk4 SRi C20LET track car in the making.... (slowly!)

    T34, Custom Inlet, Emerald

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    Re: how to wire up a second battery and split charge relay

    cheers for the link, reckon i'll get one of them! thanks
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    Re: how to wire up a second battery and split charge relay

    Quote Originally Posted by J Sabo View Post
    a split charge relay is JUST A relay - high amps though.

    2 large terminals connect both batteries

    1 terminal Earth, the other connect to the Blue/White wire from Alternator to battery dash light
    No it isn't - also incorporates blocking diodes to prevent cross discharging.

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