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Ford electric fan

Discussion in 'Early CJ5 and CJ6 Tech' started by alleycat3677, Oct 13, 2015.

  1. Oct 14, 2015
    turbogus

    turbogus Member

    Albany, Oregon
    Joined:
    Sep 1, 2014
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    215
    Here's how I wired up the Contour/Mystique fan setup on 'Black Betty' this isolates the circuit to it's own supply not relying on another source but the battery;

    http://www.jeepz.com/forum/cj-yj-tj...upgrade-incorporating-slow-start-feature.html


    I'd like to add that for a complete cooling fan system the fan does need to be shrouded and the radiator completely covered by that shroud as the cooling air will follow the path of least resistance instead of through the radiator core without a shroud, which is why I went with the Contour/Mystique fan and shroud on account it fits a CJ radiator tight without any gaps.

    http://www.jeepz.com/forum/cj-yj-tj-jk/39995-contour-fan-upgrade-need-step-step-please.html
     
    Last edited: Oct 14, 2015
  2. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
    Joined:
    Oct 10, 2015
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    159
    The PO has the high speed wired through an 80amp continuous flow solinoid,low speed through a 30amp relay. Problem is there are no switches or thermo sensors. PLUS!!!!-a wire coming off from both that's goes who knows where!! Which is (I'm assuming) why it affects the lights! I've seen diorama that describe this same setup except it is an isolated circuit that has a thermo switch and a hi lo switch. Wish I could post pics with my phone!
     
  3. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Oct 10, 2015
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    159
    This mid 90s Taurus fan covers the radiator and is in a shroud. I guess I need to isolate the lights and fan! Way above my capabilities!!!
     
  4. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Oct 10, 2015
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    159
  5. Oct 14, 2015
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    USA
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    No, its not. You will just need to do a little research and teach yourself some basic wiring, then trace where they go. Buy a cheap multi meter. Looks like you need it. You will need to install a temp switch for the fan in the intake or another place. Do a search on this site and or google and you will see some solutions.

    Relays are just switches, don't be intimidated. You do need to get 12 volts from somewhere other than your lights. It was mentioned that the ignition switch would be a good place. If you take your time you can do this.

    Does the low speed run all the time? Does the high speed kick on? If it does it has a temp sender somewhere. If they both run all the time, it is either wired wrong, missing a temp sender or the temp sender is broken.

    Trace the wires and see where they go. if you disconnect a wire label it so that it can go back to the same place. Use tape or the pack of letters numbers that is for this. remember that you can burn up your wiring harness, so you want to disconnect the ground from your battery.
     
  6. Oct 14, 2015
    Jasontg

    Jasontg Member

    Georgia
    Joined:
    Feb 6, 2014
    Messages:
    136
    If you have a smart phone you can download a photo hosting app such as photobucker or Flickr and post pictures using your phone. I don't have a computer except at work so most of my stuff is through my iPhone. I'm afraid I can't help with much but a lot of these guys can. Photos help immensely.
     
  7. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Oct 10, 2015
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    159
    As I'm siting here thinking,the two wire probably go to the ignition since the fan comes on with the key. That would mean both high and low are on together. Which I'm sure is bad. So I'm also guessing it's drawing way too much power screwing with the whole front end electric. I will get a two way toggle for the high/lo and another as a master. Just in case of water. Also a temperature switch. What's a good pre set switch temp? 190? Once I have a temp gauge I can go from high to low as I need. Does all this make sense?
     
  8. Oct 14, 2015
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    Well it does and it doesn't. What I mean by that is you don't want those fans running off your ignition switch or any of the jeep's original wiring. The fans need to be powered through relays which should be powered from the main battery with their own heavy wires. Use your ignition switch for small amp relay control power through your individual switch setup.
     
  9. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
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  10. Oct 14, 2015
    uncamonkey

    uncamonkey Member

    Greeley CO
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    Jun 2, 2009
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    2,104
    Do a search at your local parts place. They used to have a adjustable control with a capilary tube that would control the on/off function of the fan. On mine, the tube is simply zip tied below the upper tank on the radiator and it is wired into a toggle switch on the dash so unless I am out on a trail in the heat, I never turn it on. I still run the stock fan and if you are running at a road speed there is enough air coming through to cool things anyway.
     
  11. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
    Joined:
    Oct 10, 2015
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    Here's what I've found. It's wired just like this except he has it turned on with the ignition with no switches at all. I just need to add all the switches. Nice to finally add pics. Thanks
     
  12. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    159
  13. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
    Joined:
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    159
  14. Oct 14, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
    Joined:
    Oct 10, 2015
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    Just so you guys see what the jeep is!
    [​IMG]
     
  15. Oct 15, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Sep 21, 2002
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    If it goes to the hi and lo as mentioned I would think it would have to be causing a large current draw, and it seems that would explain your low battery issues. Have you noticed the wires getting hot?

    By the way the Jeep looks good!
     
  16. Oct 16, 2015
    alleycat3677

    alleycat3677 Member

    Upstate NY
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    Well gentleman....fixed the fan!!! Apparently my front grill is a bad ground and it was also wired wrong! Now she has a two way switch for hi and low. And if I forget to turn it off no big deal cus it's wire to the ignition! Thanks for all your help. Next I'll get the Petronix ignition and do away with the points!!!!
     
  17. Oct 16, 2015
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    I thought this may be the case on the headlights. Glad you found the bad ground. Bad grounds causes all kinds of crazy things to happen.
     
  18. Oct 16, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    If the body is fiberglass as it appears to be then a bad ground certainly makes sense. Glad it's fixed. :)
     
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