Mustang Universal Mass Air Flow EFI Harness 5.0/5.8 by Ron Francis Wiring

Mustang Universal Mass Air Flow EFI Harness 5.0/5.8

Get your V8 motor swap completed quickly, and easily with this Ron Francis universal Mustang EFI/MAF harness.

Item #LRS-93CWH

Everyday Low Price: $649.95

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  • Ford Mustang - 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
  • Engines: 5.0, 5.8
Made in the USA


  • Perfect For Motor Swaps
  • Clean Install


  • Pre-Loomed Wires
  • Factory Connections

 What's in the Box

  • (1) EFI/MAF Harness

Ron Francis 5.0 Universal Mass Air Sensor Harness
This Ron Francis Mustang universal EFI/MAF harness is the perfect way to get your 302ci or 351ci swap completed. With pre-loomed wires and factory connections, you can wire up your motor quickly and easily without cluttering your engine bay with stray wires. This harness is partially finished off with wrap tape but can be slightly reconfigured for rerouting wires. Kit includes complete instructions and an install kit consisting of zip ties, firewall grommet, wrap tape and four sizes of hi-temp zip loom.

Product Notes
  • This system is designed to install Mass Air Flow-based Ford EFI 5.0 & 5.8 engines.
  • This harness does not include provisions and is not intended for installation on emission controlled vehicles.
  • This harness is specifically designed for the "High Output" firing order ( 1-3-7-2-6-5-4-8 ) Make sure your camshaft and computer match this order.
  • The distributor should be specific for your engine (5.0/5.8) and have the TFI ignition module mounted onto the side.
  • There is a resistor pack already installed in this harness for the EGR positions sensor. No other resistors are required.

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About This Brand

Ron Francis Wiring
With over 34 years of experience in the Street Rod and Hot Rod industry, you can trust that Ron Francis Wiring will surpass your expectations. They specialize in developing cutting-edge wiring products to keep ahead of the competition. Ron Francis Wiring is dedicated to providing a broad spectrum of quality electrical products along with exemplary customer service to make your experience a memorable one. Whether you need a small wiring pigtail or an entire electrical harness, Ron Francis Wiring has the parts you need to get the job done. Shop our selection of Ron Francis Mustang wiring harnesses at!
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