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Was trying to finish my 300 to 351w swap this weekend. Obtained the whole harness from an '87 F-150 (5.0). I was under the impression that the harness pigtails running from below the brake booster were the same across all 87-91 models, can anyone point me to diagrams of these pigtails?.( Square ones are out of my 88 and round are from the 87) Really wanted to have it fired up this weekend but as it is my first full engine build but without power to the fuel pumps, obviously it's a no go.
Last edited by fishfreak101; May 29, 2026 at 09:17 PM.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
