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Thread: Wiring up a split relay charge kit - how to wire it up

  1. #1

    Wiring up a split relay charge kit - how to wire it up

    I've got one of these
    http://www.ebay.co.uk/itm/1811607799...%3AMEBIDX%3AIT

    I followed the instructions (which I no longer have) but I keep blowing the fuse making me wonder if I've wired it up incorrectly. Can anyone tell me what wires go to which number please? I've asked the supplier but they've not replied yet.
    Thanks all.


  2. #2
    Comfortably Numb Rick69's Avatar
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    I would assume looking at it that the car battery and leisure battery go to the first two terminals marked 12v. The right hand terminal goes to earth, and looking at the instructions available on the interweb for other manufacturers terminals 2, 4 and 6 are wired to the toebar p!ug to provide power to a caravan - not required in your case.

    The mnanufacturers website lists these at a tenner, to be honest if its knackered id throw it away and get a decent one, IIRC durite were the ones recommended on here but im sure someone will advise.
    First one that came up on ebay was. http://m.ebay.co.uk/itm/12V-140amp-D...313?nav=SEARCH

  3. #3
    Heavenly Creature realnutter's Avatar
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    The car and leisure batteries my have to be the right way round on the terminals... I expect it only voltage senses on one...

  4. #4
    Tuning In andyvw's Avatar
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    I've just had a bit of a dig around and I agree with Rick69 regarding the connections. On this page - http://www.12voltplanet.co.uk/split-charging.html - scroll down to '3. Voltage Sensitive/Sensing Relay (VSR)' and on that diagram the two red wires are your two '12v' terminals, and the 0v to chassis/ground. You would connect your loads to the top of the right-hand fuse. Logically, one side would be 'input' and the other 'output' as realnutter says, but it seems to suggest on that page that it doesn't matter.

    I'd be slightly worried to use these cheap controllers though A review I came across for a similar one on Amazon here - https://www.amazon.co.uk/Smartcom-Vo.../dp/B00SGFTR2S - shows that it's quite shoddy build quality. And anything that uses those snap-onto-wire-insulation connectors (whatever they're called) is a bit dodgy in my books.

  5. #5
    Not Quite a Noobie
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    "snap-onto-wire-insulation connectors (whatever they're called) is a bit dodgy in my books."

    Yep, they're called Scotchlock connectors and they're notoriously unreliable, cheap and nasty. Avoid these connectors if at all possible.

  6. #6
    I've got a vsr. It goes starter battery 12v+ to 100 a fuse, then to vsr unit, then to 100 a fuse, then to leisure 12v+

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