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Thread: Winch wiring?

  1. 5th April 2007, 12:56 PM #1
    jik22's Avatar
    jik22
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    Winch wiring?

    A few of questions, if I may.

    Firstly, should the winch be wired off the main or aux batteryh in a dual setup, and if there are no hard and fast rules, what are the pros and cons of each?

    Second, most diagrams I've seen seem to show the winch running both wires back to the battery, rather than use a shorter earth lead back to the chassis. Is there any reason for this?

    Also, how do you fuse one? I'm guessing they draw lots of current, which rules out most fuseholders - do they come with one, or use a fusable link or similar?

    Thanks!
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  2. 5th April 2007, 01:18 PM #2
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    Quote Originally Posted by jik22 View Post
    A few of questions, if I may.

    Firstly, should the winch be wired off the main or aux batteryh in a dual setup, and if there are no hard and fast rules, what are the pros and cons of each?

    Second, most diagrams I've seen seem to show the winch running both wires back to the battery, rather than use a shorter earth lead back to the chassis. Is there any reason for this?

    Also, how do you fuse one? I'm guessing they draw lots of current, which rules out most fuseholders - do they come with one, or use a fusable link or similar?

    Thanks!
    I asked the same questions a while ago, and i think it depends on what batts you plan on running and for what useage. If you want a deep cycle for fridge use etc then wire it off main batt so you dont kill it beyond recharge.
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  3. 5th April 2007, 05:33 PM #3
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    wire it of second battery (if not deep cycle) so it will use both batteries while dual battery solenoid is active. running the earth back to the battery will give it a better return path than through the chassis.
    As for fuses i run 2 (1 of each battery) 250a fuses, but i cant start my car or winch under load unless dual battery system is active (my starter is massive and winch uses about 460a under full load).
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  4. 5th April 2007, 08:07 PM #4
    Bush65
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    I have one of Drivesafe's smart charger units with my dual battery system, but use a solenoid to connect both battery's together for winching (I run the engine while winching, so the alternators charge helps and flattening the starter battery is less of an issue).

    I always have an earth lead from the winch motor to the battery terminal. Have heard of problems when relying on the chassis for the earth return.
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  5. 5th April 2007, 08:24 PM #5
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    Blknight.aus
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    heres my thoughts on dual battery winching..

    1. make sure the second battery is at least a combo battery or a starting battery with buckets of Amp hours available to it (some times marked as RC)
    2. winch off of the battery that does not have your vehicles electronics on it (if you have them)
    3. have the biggest manual isolator to link the 2 batterys but dont link them unless you really really need to.
    4. have a good dual battery charging system.

    the logic is easy,
    1. you can boost start yourself off of your secondary battery if the first one dies
    2. If you draw the volts down too low your electronics will cut out, when they go so does the engine, when the engine stops so does the alternator... (thats bad as usually by this time in most "dumb" setups or if youve linked batteries your second battery will be too flat to boost the primary)
    3. IF you have to boost start or for some reason need the second battery to drive the winch a piddly 30a horn relay just aint gunna do it for ya
    4. if you need this explained goto your nearest winch fitter and ask for a hydraulic winch instead.


    ITs not going to work for everyone everytime but it does minimise mr murphys chances to interfere.

    oh a word on winch power cables, get the biggest ones you can with the thickest insulation you can, dont run them ajoining and if you can get them double insulated so much the better...
    Dave

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