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wiring harness

  1. Mk IV Base Kit Build

    New Member Introductions
    I am using a 2001 Mustang Cobra as donor to my Mk IV base kit build. I am currently pulling the wire harness. I have the 2001 shop manuals including the wiring diagrams. I am having some trouble matching the harness to the numbers in the wiring diagrams. They show plug numbers but there...
  2. Fan wiring...hopefully this is easy

    Factory Five Roadsters
    I'm using a FAST 2.0 EZ EFI system on my car. The computer wants to control(adjustable via keypad) the fan. I have the sensor installed into the manifold by the water neck and that sensor plug goes back into the main EFI harness. I have a blue wire labeled "Fan1 Relay" with a 1 amp inline fuse...
  3. '98 GT motor/trans Donor for Complete/Base Kit

    Ford Modular Engine Roadster Builds
    Hey there... I'm brand new to the FFCars community and my father & I are starting our journey through the build of our very own Mark IV... hoping to start this coming winter. I was hoping to get some advice and guidance on a few questions we have... the first of many, I'm sure! We're on a...
  4. T-45 / 3650 Trans wiring harness?

    Ford Modular Engine Roadster Builds
    I've realized a new Coyote and trans is no longer in the budget. So I have been staring at ebay / salvage auctions of 4.6 modulars and my eyes hurt. What does the transmission wiring harness provide? More to the point, If I go with a standalone ECU (Megasquirt) do I even care? Is there some...