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Sequential Tail lights '69

Discussion in '1965-1970 Shelby Mustang GT350 & GT500' started by 69Conv, Apr 6, 2010.

  1. Apr 6, 2010 #1
    69Conv

    69Conv New Member

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    I'm trying to undo the hack-job the original owner did to my '69. Wiring in trunk had sections of wiring missing, spliced, and sequential boxes removed. I bought cougar wiring harness on ebay and it looks identical (except not hacked up). I bought new electronic sequential control board. But it seems previous owner ALSO did some rewiring under the dash, as signals on wiring don't seem to match what the factory schematics (Shelby-unique) suggest.:mad:

    So two questions: (a) should a Cougar XR7 underdash harness be an exact swap? (b) has anyone decoded what signals are on which plugs? (there's a 4-connector black plug, a 4-connector white plug, a 2-connector black plug, and a one-connector blue plug)?
     
    69Conv, Apr 6, 2010
    69Conv, Apr 6, 2010
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  2. Apr 7, 2010 #2
    Coralsnake

    Coralsnake Well-Known Member

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    I looked up the tail light harness and it does appear that it is the same as the Cougar. It has a C9WY-part number. The under dash harness is not the same to the best of my knowledge. I am pretty sure you need a Mustang GT/Tach style underdash harness. ITs kind of a PIA to trace the wires by wire colors, but it can be done. I am familiar with all the Mustang underdash connectors, but I do not know the Cougar versions.

    I have all new harnesses for sale if you decide to change direction and really clean up your issues. The bad news is these two harnesses are the two most expensive ones I sell.

    Coralsnake68@hotmail.com



    :whistle:
     
    Coralsnake, Apr 7, 2010
    Coralsnake, Apr 7, 2010
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  3. Apr 9, 2010 #3
    Bob Gaines

    Bob Gaines Well-Known Member

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    The 69/70 Shelby taillight harness is NOT the same as the 69 Cougar. The 69 Cougar taillight harness could be rigged up to work but is not the same. The 69/70 Shelby taillight harness is unique to 69/70 Shelby partially because the Shelby harness had to have it's own ground incorporated into the Shelby harness because of the all fiberglass Shelby tailpanel. The Shelby harness had special clips that grounded the bulb receptacle's. The Cougar harness on the other hand utilized the grounding properties of the all steel Cougar sheetmetal tailpanel. There are lot of things that the Cougar shared with the 69/70 Shelby but the taillight harness is not one of them. Bob
     
    Bob Gaines, Apr 9, 2010
    Bob Gaines, Apr 9, 2010
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  4. Apr 9, 2010 #4
    Coralsnake

    Coralsnake Well-Known Member

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    Gee maybe I can sell a harness.
     
    Coralsnake, Apr 9, 2010
    Coralsnake, Apr 9, 2010
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  5. Apr 10, 2010 #5
    Bob Gaines

    Bob Gaines Well-Known Member

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    The Pete,the one you sent me to look at and compare to my originals certainly impressed me. I would use the one you sell in a second if I didn't have a excellent genuine factory Shelby one to use. Bob
     
    Bob Gaines, Apr 10, 2010
    Bob Gaines, Apr 10, 2010
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