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  • Dual battery wiring set-up question

    Guys,
    I'm just about finished installing my dual battery wiring but would like your advice on something. In the attached wiring set-up, is it correct and OK to connect my accessory fuse box to the Redarc SB112 second battery connection, other than having to run another wire around the engine bay to the second battery positive terminal?
    Bazza
    Attached Files
    [i]I'd rather laugh with the sinners than cry with the saints![/i]

  • #2
    If you want to run the accessories of your second battery then that's fine, pretty easy to swap to the other terminal on the redarc if you change your mind. I run my compressor of that terminal.

    Cheers Andrew
    [COLOR="#FF0000"]So Long and Thanks for all the Fish![/COLOR]

    [url=http://www.4wdadventurers.com/showthread.php?3840-AJ-s-120-Prado]MY PRADO AND DIY CAMPER TRAILER[/url]

    [url=http://www.4wdadventurers.com/showthread.php?3975-AJ-s-79-series-Cruiser-Ute]MY HZJ79 Landcrusier[/url]


    [SIGPIC][/SIGPIC]

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    • #3
      does the arb loom kit (redarc) come with circuit breakers already put in?

      Comment


      • #4
        No problem doing so. Just be sure the main battery cables are correct size. I wouldn't go less that 35 mm squared preferably 40 mm. This way you get no loss and starting from the auxiliary is not an issue. Note if you do intend to use the SBI12 for over ride starting I would fuse 200 amp fuses/circuit breakers. The diesel starter motor draws about 260 amps (not sure about the petrol but would suggest somewhat less).

        Hope this helps
        Hazza
        Silver 120 Series Diesel GXL 2009 with Option Pack 2, king Springs 2" Lift with 'H' front spring, MT ATZ 4-RIB, Dual Battery, Deluxe ARB Bull-bar, Winch, Towbar, Anderson 50 amp plug at the rear, Weather Shields, Bonnet and Head Light Protectors, Rubber Mats inc Cargo mat, UHF Ariel, Portable Uniden UHF plugs into areal, On-board ARB Compressor, Brains Black Box TG150 Protector, Rear Black Duck Seat Covers.

        Comment


        • #5
          Originally posted by AJ120 View Post
          If you want to run the accessories of your second battery then that's fine, pretty easy to swap to the other terminal on the redarc if you change your mind. I run my compressor of that terminal.

          Cheers Andrew
          Hi Andrew,

          Your not having any issues with the SB112 working correctly coming off that terminal? I'm just wondering why Redarc say not to use that terminal for any other connections. I don't see any difference running my accessory fuse block from there or the second battery + terminal. Redarc says that it could make it's unit not work correctly and possibly damage it?
          Bazza
          Bazza
          Senior Member
          Last edited by Bazza; 31-03-2013, 10:39 AM.
          [i]I'd rather laugh with the sinners than cry with the saints![/i]

          Comment


          • #6
            I haven't had any issues and I have set up for around 3 years now. I dont recall reading anything about not using that terminal so it never crossed my mind that it could be an issue. I have 2 wires coming of there, the one to the compressor and the one to the second battery, I can't see any difference between using that terminal or running the power back from the battery, its all still connected on the same circuit!

            In my case the SBI12 is behind the right headlight and the second battery is in the rear cargo area, what happens if you mount the isolater right next to second battery with a really short run? Are there any minimum cables runs in the instructions? I recall the isolator should be close to the main battery but thats all.

            Cheers Andrew
            [COLOR="#FF0000"]So Long and Thanks for all the Fish![/COLOR]

            [url=http://www.4wdadventurers.com/showthread.php?3840-AJ-s-120-Prado]MY PRADO AND DIY CAMPER TRAILER[/url]

            [url=http://www.4wdadventurers.com/showthread.php?3975-AJ-s-79-series-Cruiser-Ute]MY HZJ79 Landcrusier[/url]


            [SIGPIC][/SIGPIC]

            Comment


            • #7
              Originally posted by AJ120 View Post
              I haven't had any issues and I have set up for around 3 years now. I dont recall reading anything about not using that terminal so it never crossed my mind that it could be an issue. I have 2 wires coming of there, the one to the compressor and the one to the second battery, I can't see any difference between using that terminal or running the power back from the battery, its all still connected on the same circuit!

              In my case the SBI12 is behind the right headlight and the second battery is in the rear cargo area, what happens if you mount the isolater right next to second battery with a really short run? Are there any minimum cables runs in the instructions? I recall the isolator should be close to the main battery but thats all.

              Cheers Andrew
              Hi Andrew,
              I agree with your thinking, but this is what I found on their site in SB112 FAQ's ...............

              Question

              Can i connect an external relay or load on the SBI solenoid control terminals to turn the fridge ON/OFF when the SBI turns ON/OFF?

              Answer

              Though the control terminals make an easy trigger to turn a device such as a fridge ON with the solenoid, Redarc warn that connecting to these terminals may cause damage to the solenoid or control circuitry. Redarc recommend using a low voltage cut off device such as our VS12 to achieve this, rather than connect to the control terminals. See below. Redarc recommends that under no circumstances should anything be connected to the SBI control terminals other than the SBI control box.

              Maybe it's just a spiel to sell their VS12 ( an adjustable low voltage cut-out controller usually used for fridges ) but they do say "or load"?
              Bazza
              Bazza
              Senior Member
              Last edited by Bazza; 31-03-2013, 02:58 PM.
              [i]I'd rather laugh with the sinners than cry with the saints![/i]

              Comment


              • #8
                Thats interesting, certainly it has caused me no issues and I know of another Prado owner (not a pper) who has all his accesories connected of the crank battery side of the SBI12 and his is fine as well after many years.

                It would be interesting to hear someone explain how it can cause an issue.

                Cheers Andrew
                [COLOR="#FF0000"]So Long and Thanks for all the Fish![/COLOR]

                [url=http://www.4wdadventurers.com/showthread.php?3840-AJ-s-120-Prado]MY PRADO AND DIY CAMPER TRAILER[/url]

                [url=http://www.4wdadventurers.com/showthread.php?3975-AJ-s-79-series-Cruiser-Ute]MY HZJ79 Landcrusier[/url]


                [SIGPIC][/SIGPIC]

                Comment


                • #9
                  The only way I can see it causing a problem is of you have a large inductive load connected without back EMF protection that could spike the Redarc electronic controls. Not much chance of that in a typical 4wd installation. Also, I notice Redarc are very conservative in their advise. For what its worth I use the Redarc terminal rather than running cabling all the way back to the Aux. battery.

                  You need to make sure the cable between the Redarc and the Acc.Fuse block is adequately protected by either:
                  1: Using cable with a continuous current rating of greater than 100amps.
                  2: If you choose to use smaller cable install a suitably sized fuse at the Redarc Terminal.
                  Note: the current ratings of auto cable quoted by manufactures is not for continuous duty.

                  Leachy
                  EX-Prado Owner

                  Comment


                  • #10
                    I think you'll find Redarc are talking about not using the small 'switching' terminals which energize the solenoid for anything else, not the larger terminals that are connected to both battery positive terminals. It is fine to connect accessories to the larger ones, they are just battery feeds, one from your start/run battery, the other from your auxiliary battery.

                    Comment


                    • #11
                      Originally posted by datsezy View Post
                      I think you'll find Redarc are talking about not using the small 'switching' terminals which energize the solenoid for anything else, not the larger terminals that are connected to both battery positive terminals. It is fine to connect accessories to the larger ones, they are just battery feeds, one from your start/run battery, the other from your auxiliary battery.
                      Hi datsezy,

                      No, they are talking about the two top battery terminal connections. There is even a diagramme showing it, but I could'nt copy it. It is well documented not to use the "switching terminals".
                      It is documented and drawn on their site for those who are interested.

                      Bazza.
                      [i]I'd rather laugh with the sinners than cry with the saints![/i]

                      Comment


                      • #12
                        Originally posted by Bazza View Post
                        Guys,
                        I'm just about finished installing my dual battery wiring but would like your advice on something. In the attached wiring set-up, is it correct and OK to connect my accessory fuse box to the Redarc SB112 second battery connection, other than having to run another wire around the engine bay to the second battery positive terminal?
                        Bazza
                        It's fine to do what you are asking here Bazza, as long as you have wired it up with the correct size cable, as Hazza said. I've easily fitted/wired up more than 30 SBI solenoids and done what you are wanting to do with no problems whatsoever.

                        Bazza you are correct in saying you cannot use the solenoid as a switch, I just had a look at their website.

                        http://www.redarc.com.au/handy-hints...rol_terminals/

                        http://www.redarc.com.au/images/uplo...minal_load.pdf

                        Comment


                        • #13
                          Don't know why they recommend the VS12 in between fridge and aux battery tho. Fridge won't work when aux battery goes flat, and most 12 volt fridges have a low voltage cut out point anyway. Then you start your car, alternator charges & hits the energising voltage for SBI and charges aux batt.

                          Comment


                          • #14
                            Hi all, I have just build a battery box to place in the rear of the prado to fit behind my draw system, and I've ran some 8B&S cable to the rear to a 50A Anderson plug.
                            I have read that it is best to place the isolator under the bonnet close to the starter battery, my question is, are there any issues in regards to charging and isolator operation if I place the isolator in the box in the rear with the aux battery, similar to a ABR flyer battery box.
                            2007 VX 1GR-FE, Dune, ARB Sahara Bar, Waeco CF-50, Dual Battery, Alinco UHF CB, DIY Drawer and DS40 drop slide, Tinted Windows, HR towbar, Dash mat, IPF900 HID converted, Warn M10000/ synthetic rope, extended Diff and Gearbox Breathers, Tough Dog Suspension lift Kit

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                            • #15
                              Sorry guys I just need clarification on some thing, connecting your acc block to the redarc is so acc will run from the aux battery? Correct? Or is for something else?
                              I thought I would be differant and get a silver prado...
                              2004 Grande, 4lt petty, Sov front bar, 9000 Lb tigers winch, factory tow bar, Fwd Rec points, Safari Snorkel, Bushskinz bash plates, Austrack roof top tent on Steel RTT rack, Kings awning, ARB under bonnet compressor, Coleman on Demand HWS, IPad with retina on a Ram mount running Hema Navigator, GME TX 3400, Tekonsha P3 Brake controller, and a Stihl 181.

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