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Thread: Wiring harness question

  1. #1
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    Post Wiring harness question

    Halloween 2010 140.jpgI have an 84' Jeep CJ-7. I was replacing my old burnt up Dash wiring harness with one that I got from e-bay awhile ago. Everything was going weHalloween 2010 138.jpgll until I got to the windshield wiper control plug. The plug on mine is a 7 prong connector with a 4 prong off shoot connector and the one on the replacmenHalloween 2010 139.jpgt is a much smaller one with no off shoot. I am assuming that the wiring harness that I am trying to install is from either an 81' or 82' CJ-7. My questionHalloween 2010 140.jpg is will this harness that I am installing work or will I need to make some modifications? Also, will I have any problem with the 81' fuse block matching upHalloween 2010 138.jpg to the firewall block on my 84' CJ. I do not have a delay box on my CJ so, I am assuming that the off shoot connector goes to the windshield washer control.Halloween 2010 139.jpg

  2. #2
    Senior Member Sr. Beaver's Avatar
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    I will have mine in the shop tomorrow afternoon and can take a peak and see what mine looks like and where they go for sure and let you know. I think you're right one the other one going to the washer.
    Only the dead have seen the end of war - Plato

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    Quote Originally Posted by gearhead1985 View Post
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    Sorry things got a bit hectic didn't get in the shop till today and my 85 doesn't have the other plug that I could find
    Only the dead have seen the end of war - Plato

    I don't always go full retard, but when I do I take the Jeep...

    Money can't buy Happiness, But it can buy BACON, close enough!!!


    Quote Originally Posted by gearhead1985 View Post
    i think i r druck and will rechecck in the morning





    ___/l ,[____],
    l----------L OllllllO-
    ()_)-----()_)-o-)_)

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    Senior Member HillBillE's Avatar
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    What you have there are intermittent wipers (the big 7 prong one) and the other (4 prong) is for just HI/LO wipers. The other line is for the washer/squirty thingy. (push the wiper knob 'in' to squirt)

    You can rig the intermittent harness to work with the standard HI/LO switch, bu using some jumper wires.

    But if you can get the intermittent to work, it's really nice to have.

    The switch is like $60-$70 though, If I remember right.


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    Senior Member HillBillE's Avatar
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    Reading that again, it sounds like your Jeep has the intermittent wipers already. You should be able to retain them, as I think it's just an 'add on' that plugs inline. (been awhile since I did mine)

    As far as the fuseblock at the firewall, they are the same. I used an '84 body harness and fuse box, with my '80 front clip harness. They mate up perfectly.

    There is also a connector between the switch, and the motor. This is so you can remove the ntire windshield, without removing the wiper motor.

    I know it's a flat plug, I think with 4 wires.


    As long as the people remain armed,
    government knows that it cannot rule over the people by force.
    Those who stand in defiance of unconstitutional laws
    do so out of duty, honor, oath and love of country.


    "Certified Jeep Junky!"


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    I'm having the same problem right now. My painless harness only came with 2 wires under the dash. (one is power and the 2nd is a wire for the washer pump). My new wiper motor came with a four wire flat plug end. So i have six total wires under the dash and i'm trying to figure out how to conect them to the switch that has 7 prongs. Please update us when you figure it out, and if i come to a conclusion i'll be sure to let you know what i came up with.

    god luck
    85 CJ7 4.0 head Mopar MPFI 4.5'' suspension 1'' body lift 35 BFG 4:56 and Detriot lockers F&R 1 peice rear axel

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    hey Me+3, I already finished my wiring project. I purchased on e-bay a really awesome wiring schematic for my 84' CJ-7. This schematic has all the wiring color codes that are on your Jeep. If you go to [email protected], you can see the price. I think they're about $4.00. The schematic is laminated so if you get grease on it, you can just simply wipe it off. I actually used my old wiring harness and looked at each and every wire to make sure there was no shorts or exposed bare wires. Afterwards, I used electrical tape to re-wrap the wire and put wire ties at the ends of the tape to keep the tape from unravelling. It looked like a real professional job after it was all said and done. When I got that schematic in the mail, I just went off of that and it all came together perfectly. If you still have your old wiring harness, that's what I would suggest you do. Let me know what you think.

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    War Eagle Me+3's Avatar
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    The old wiring harness got trashed during my rebuild. I wish i had it back, but i'll have a look at this schematic to see if it will help. Thnaks for the info
    85 CJ7 4.0 head Mopar MPFI 4.5'' suspension 1'' body lift 35 BFG 4:56 and Detriot lockers F&R 1 peice rear axel

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