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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » EFI Wiring Harness for 5.0L in 1966

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    8/21/2015 11:49 AM  #1

    TxStretch
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    Registered: 4/06/2013
    Posts: 9

    EFI Wiring Harness for 5.0L in 1966

    Can anyone give me guidance or your experience on a vendor for a wiring harness to put a 5.0L in a '66 Mustang. I want the best value (good quality / trouble-free service / price).
    Thanks, Larry
    ----------------------------
    1966 Conv. 5.0L AOD

     

    8/21/2015 1:59 PM  #2

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,491

    Re: EFI Wiring Harness for 5.0L in 1966

    It has been ten years since I bought one, and I don't know if the company is even still around, but I got it from fordfuelinjection.com. It was very good quality and had a relay bank that mounted on the inner fender.  I paid $500 for it and it was plug n play with no problems.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    8/21/2015 2:46 PM  #3

    TimC
    I FYI 24-7

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    From: Wheaton, Illinois
    Registered: 4/01/2013
    Posts: 879

    Re: EFI Wiring Harness for 5.0L in 1966

    Unfortunately fordfuelinjection, and then oldfordinjection.com are gone.  You can get about the same harness from ronfrancis.  https://www.ronfrancis.com/products.asp?dept=295

    There is some good info about the swap at the BC Broncos site, too. 

    Last edited by TimC (8/21/2015 2:50 PM)

     

    8/21/2015 9:57 PM  #4

    whlnut
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    From: Brunswick, GA
    Registered: 4/02/2013
    Posts: 317

    Re: EFI Wiring Harness for 5.0L in 1966

    What year is the 5.0? '94-'95 are different from '93 back.

    Last edited by whlnut (8/23/2015 12:15 PM)

     

    8/31/2015 2:41 PM  #5

    TxStretch
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    Registered: 4/06/2013
    Posts: 9

    Re: EFI Wiring Harness for 5.0L in 1966

    Thanks for the info. I'll go with th Ron Francis harness.

       •Thread Starter
     

    8/31/2015 3:48 PM  #6

    onenicefastback
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    Registered: 6/18/2014
    Posts: 96

    Re: EFI Wiring Harness for 5.0L in 1966

    I'm currently using the painless HARNESS. It is trouble free and very easy to install plus the strip out all the unnecessary wiring.  There is an article in (muscle mustang and fast fords) written awhile ago on how to splice in the factory HARNESS from a Fox MUSTANG.  I went that route along time ago with no problem but took several days to get it right. Defiantly a cheaper route if you have the time

     

    8/31/2015 6:28 PM  #7

    whlnut
    I FYI 24-7

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    From: Brunswick, GA
    Registered: 4/02/2013
    Posts: 317

    Re: EFI Wiring Harness for 5.0L in 1966

    TxStretch-  I have a new Ron Francis (Detail Zone) # MG-90 harness for '94-'95 swap. If that's want you need, PM me for a great price.
    Ed

     

     

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