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  • auxiliary water pump

    It has been discussed in other threads, but I thought the guys at the top may pay more attention here. Where on the switch would I wire an auxiliary water pump. Also, where should I get 12 volts from?

    Thanks,
    Brad

  • #2
    I would wire the auxiliary pump to a switched power lead from your fuse box, through a relay and switch so you could controll it yourself. You can wire from a switched lead in the fuse box to a toggle switch then to the relay post #85. Post #86 to ground. Battery lead to post #30. And post #87 to pump.
    '01 F350, lariat LE, cc, lb, drw, TSP 6pos. chip w/ swamps ss tunes, FF stage 1.5, MBRP 4" turbo back, cooling mist water injection.

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    • #3
      Originally posted by greasedltn View Post
      I would wire the auxiliary pump to a switched power lead from your fuse box, through a relay and switch so you could controll it yourself. You can wire from a switched lead in the fuse box to a toggle switch then to the relay post #85. Post #86 to ground. Battery lead to post #30. And post #87 to pump.
      Why does it have to be that complicated?
      12 to switch to pump is how i ran mine...

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      • #4
        I believe in using relays to protect the truck wiring, I also don't know what the amp. draw is for the pump. I just like being safe and wiring's like second nature to me. I didn't think it was too complicated but you are right, you could just put a switch and go with it.
        '01 F350, lariat LE, cc, lb, drw, TSP 6pos. chip w/ swamps ss tunes, FF stage 1.5, MBRP 4" turbo back, cooling mist water injection.

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        • #5
          Relays are and I think "should be" common practice, but I never seem to find the time to use them on my own stuff
          I won't hack on someone else's truck though... so they get all of the fancy wiring. lol.
          Vegistrokin since 08/23/08

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          • #6
            I've always just thought of relays as good, cheap insurance when it comes to wiring in vehicles.

            Guess that's why I always use them...
            Greasin & Grinin
            Vegi oil powered since Aug 08
            2006 F-250 PSD - CC, Lariat, 4X4 - Vegistroke converted 1/27/13!!
            2008 F-250 PSD - CC, Lariat, 4X4 - Sold
            2005 F-250 PSD - CC, Lariat, 4X4 - Sold

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            • #7
              Relays are good policy - but at 2.5 amp draw of coolant pump, not really necessary. A fuse at the 12v source (to protect entire circuit) is sufficient.

              Sorry for such a late entry on this...
              2001 F350 XLT 4x4, dually flatbed. 6637 air filter, single-shot injectors, straight-piped, BTS tunes, 200 gal main VO tank - 180k greasy miles
              2000 Excursion Limited 4x4. V3, AIS intake, BTS trans & tunes - 120k VO miles
              veggiegarage.com authorized installer

              RIP X & Toyhauler - you served us well.

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              • #8
                Originally posted by skyskijason View Post
                Relays are good policy - but at 2.5 amp draw of coolant pump, not really necessary. A fuse at the 12v source (to protect entire circuit) is sufficient.

                Sorry for such a late entry on this...
                only a month late

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                • #9
                  Would a key-on power source be a bad thing? I don't see a problem with having the pump on all of the time, unless you're trying to kill the system entirely, then you'd just un-plug it.
                  Vegistrokin since 08/23/08

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                  • #10
                    Originally posted by Jack_Toepfer View Post
                    Would a key-on power source be a bad thing? I don't see a problem with having the pump on all of the time, unless you're trying to kill the system entirely, then you'd just un-plug it.

                    Jack, I would think an in-line fuse at any 12V switched source would be fine. Just find one in the fuse box and put in one of the "add-a-fuse" holders from Autozone or advance.

                    Just make sure it's switched, otherwise it'd run even with the key off.
                    Greasin & Grinin
                    Vegi oil powered since Aug 08
                    2006 F-250 PSD - CC, Lariat, 4X4 - Vegistroke converted 1/27/13!!
                    2008 F-250 PSD - CC, Lariat, 4X4 - Sold
                    2005 F-250 PSD - CC, Lariat, 4X4 - Sold

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                    • #11
                      mine is switched and keyed. I turn it off this time of year and won't use it again till temps drop some in Oct. My tank gets plenty hot when its 100* outside.

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                      • #12
                        switch and key.... good idea.

                        I'm working an angle on picking up a welder from a friend of mine, and when I do, the cover/guard will be complete... complete with a spot for the aux pump to mount directly to the guard (rubber mounted). The manifold isn't light... and getting a nice hinge that will flip out like I need it will have to be pretty strong. The pump doesn't weigh but a pound or so though right?
                        Vegistrokin since 08/23/08

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                        • #13
                          Finally getting around to putting the auxillary pump on. Correct - it is only about a pound. I have three of them scavenged from pick-and-pulls for about five bucks each. Look around the yards for Mercedes - both gassers and diesels - they are on the passenger side wheel well area.

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                          • #14
                            Perfect, thanks!
                            Vegistrokin since 08/23/08

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