Painless Performance 5.0 Liter Fuel Injection Conversion Harness

Painless Performance:


  • 1986-1995 5.0L Swap Harness
  • Includes OE Style Connectors
  • Includes Mounting Hardware
  • Detailed Instructions
MSRP $920.95
You save 50%

Painless Performance Engine Conversion Harness for use on 1986-1995 5.0 Liter Mustang Engines.

For installation of the popular Ford 5.0 HO Mass Air Flow EFI engine into any project vehicle. Harness comes complete with factory connectors, terminals, color coded wire and plugs directly into the factory ECM. This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount. Perfect for those that plan to mount these components under the dash or in the glove box. Harness does not include any emissions or automatic transmission related connections.

This kit includes:

  1. All new fuel injection harness with OEM fitment connectors and harness breakouts
  2. Diagnostic connector and check engine light
  3. Crimp-on terminals, rubber grommet
  4. Mounting hardware
  5. Installation manual


  • 1986-1988 Speed Density cars must add MAF (mass air flow) sensor
  • 1994-1995 must modify TPS wiring and change distributor

California Residents: Proposition 65 Warning

Vehicle Fitment

This product will fit the following Mustang years:

Only registered users can ask/answer questions. Please sign in or create an account.
Write Your Own Review
Only registered users can write reviews. Please sign in or create an account.