Painless Performance 5.0 Liter Fuel Injection Conversion Harness

Painless Performance: 60510
MSRP: $818.95
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Painless Performance 5.0 Liter Fuel Injection Conversion Harness

Product Description

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

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

Mustang Applications

This product will fit the following Ford Mustang years:

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Product Questions


I have a 92 ford Mustang and want to replace the engine wiring harness with something similar or as close to OE as possible will this work?

Asked by: chronicdreamer
Something like this is probably closer to what you need:
Answered by: CJ Pony Parts
Date published: 2015-03-06

Will this harness work on a swap from a1997 Explorer 5.0 with aode trans?

Asked by: Tuna393
It should work since the 5.0 from the explorer is the same engine as the one in the Mustang. That being said, as with any engine swap, be prepared for modifications, which can vary depending upon your unique situation.
Answered by: CJ Pony Parts
Date published: 2015-02-16

Would this need to be modified in order to work in my 86 gt? And also i would need a new ecm correct? 

Asked by: MurdaStang
No, it'll work fine on your factory 1986 GT and with the factory ECM.
Answered by: CJ Pony Parts
Date published: 2015-01-14

I have a 1989 mustang but it's a 4 cyl car I have a 5.0 motor swap for it will this harness help look after all the wiring in the engine bay? 

Asked by: 1989notchback

Will this also work with a smog equipped car? My 92 is a 5.0 tt transmission, head cam intake, will it be plug and play

Asked by: chronicdreamer

Converting 66 inline 6 to 302 , Which ecu best for this harness 

Asked by: 66Musstang
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