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4.0 swap Simplify harness

Discussion in 'Bronco II' started by kieth tyrrell, November 2, 2019.

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  1. kieth tyrrell

    kieth tyrrell New Member

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    Once I get the scamatics from you I will probably start cutting wires. I don’t wanna mess it up to soon haha
     
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  3. kieth tyrrell

    kieth tyrrell New Member

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    Once I get the scamatics from you I will probably start cutting wires. I don’t wanna mess it up too soon haha
     
  4. kieth tyrrell

    kieth tyrrell New Member

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    I have picked on of these 4.0 ohv befor because I put one in my B2 but I can’t remember where I picked it from. What’s your way of doing it?

    I see some empty bolt holes on the heads right where the exhost manafolds are mounted. I think I ran a bolt through a chain to them holes last time. Been so long ago.
     
  5. kieth tyrrell

    kieth tyrrell New Member

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    11EB1EBA-19A5-43B2-ADC6-4BB615D160BB.jpeg View attachment 175304

    What do you think about this method. Think it’s a strong lifting point or not. Let me know all your thoughts.
     
  6. kieth tyrrell

    kieth tyrrell New Member

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  7. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    that will work just fine
    We use seatbelts cut from the trucks we are crushing to yank entire drivetrains
    I just pulled a v8 and its transmission with everything attached to it last night using a single seatbelt tied in a knot over each exhaust manifold
    Your strap idea is perfect, however I would make that strap ALOT shorter, the hook should basically be on top of the intake manifold otherwise your hoist will run out of lift before the engine is high enough to clear the radiator support

    Wiring info coming today, this am in fact....
     
  8. kieth tyrrell

    kieth tyrrell New Member

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    I am useing a chain hoist that’s mounted from the rafters. I should have plenty of clearence. I wish I had a picker tho. Be nice to roll around and help the engine in our out.

    I can’t wait to see what kinda wiring info you have for me. I think that’s going to be so satisfying to get that harness figured out and simplified.
     
  9. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    I have some time this AM set aside to get my wiring box out, sort through it and find the info you need, scan it in and upload it then post it here :)
     
  10. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    allright ready to go down this journey with me? These are my notes - diagrams - maps for a conversion when we put a 1992 Explorer 4.0L and 5 speed into a 1984 Ranger using the 92 explorer dash and wiring with the big white plug.
    The engine bay harness was simplified
    These are my notes, let me know if there is something you cannot read or does not make sense we can work through it

    Overall shot of the page
    this is the wiring for the 1992 explorer big white through the firewall plug
    [​IMG]
    Close - ups:
    [​IMG]


    [​IMG]

    Backside
    [​IMG]

    You will want to know these wires the data link connector
    [​IMG]

    92-93 explorer ignition switch wiring (on steering column)
    [​IMG]
    bottom of that same page
    [​IMG]
     
  11. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    that should really help you identify the wires where they go and why
    eliminate what is not needed then tailor the length and fit to your engine bay

    I have lots of 2.8 and 2.9L to 4.0 Conversion info, more stuff if needed:
    [​IMG]

    my 1988 to 93 4.0 truck to drivetrain wiring:
    [​IMG]
    much of it has been computerized:'
    [​IMG]

    good luck!!
     
  12. kieth tyrrell

    kieth tyrrell New Member

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    Thanks man yeah you really did your homework on that swap. So the yellow hand written paper is the big white plug.

    What are the numbers for? I see some are maybe corrected off to the side next to the numbers that are written in order.
     
  13. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    Yes the yellow paper is the big white plug front and back
    basically wires 1-45
    I am not sure if they are in any order
    I started with the larger gauge wires and listed their color, circuit number, and destination
    The circles are apparently wires not needed
    some of the other numbers and such will just be chicken scratch that pertain to our swap

    This was a 1984 Ranger that got a 92 dash and 4.0 and then eventually we went back and did a very powerful v8

    It is the closest swap I have to what you are doing
    BUT
    I also have all the info for 84, 86, 87, 88, 89, 91, and 93 trucks so if you need anything else I can look it up

    If I was there with you we would lay out the harness, quickly identify each wire, where it goes and why. Then eliminate everything not needed, cut them short, then come back and un pin all un used wires from the connectors.

    If you want me to send you any pics direct to your email or phone just PM me

    Hope this helps!
     
  14. bats

    bats Elite Explorer

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    Quality info right there. Much appreciated. I have the Chiltons manual which has been helpful enough but their wiring diagrams leave something to be desired.

    Were you able to get the engine/trans combo IN without separating? I know Rookieshooter made a quick release for part of the rad support so everything could go in as a single unit.
     
  15. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    v6 is easy to drop in as a single unit yes engine and trans together will fit, as they say
    it is all about the angle of the dangle
     
  16. kieth tyrrell

    kieth tyrrell New Member

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    I kinda wanna find a stock dash to put in. Is that going to be a pain to wire?
     
  17. 410Fortune

    410Fortune Firewood Season Staff Member Moderator

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    nope easy to wire
    same wires as you are dealing with in that big white plug except not in a big white plug
    just let me know what year dash/through firewall wiring and steering column you end up with
     
  18. ghosttrain2

    ghosttrain2 Elite Explorer

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    I am in the midst of doing this over the winter on my 86 Bronco 2. Got the donor engine out, and am resealing it. The A4LD is also being replaced with a M5OD, which I bought outright. The harness is out, and I have a 88 Bronco 2 for parts. I am not pulling the engine out of my 86 until the engine is done.
     

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