5.0 Swap: Which Wiring Harness

[Rmoore45]

Would a 1989 5.0 fuel injection wiring harness be a good harness to use for a 5.0 swap into my 67 mustang? How do I know if its a 1989?

Thanks, Ranger

 

[mikestang63]

Connections on harness

• 87-88 NO mass air, no airbag
  
• 89 YES mass air, no airbag
  
• 90-91 YES mass air & airbag, NO fuel pump relay
• 92-93 YES mass air & airbags & fuel pump relay

Also know the O2 connections are unique for sticks vs. AOD. Are you planning on EFI or carb? SD or MAF? 5spd or AOD?

 

[Rmoore45]

Mass air,EFI, 5spd.

An 89 wiring harness sounds like the best option since it does not have air air bag. There is one on eBay right now and I want to buy it however I want to be sure that its an 89 harness.

 

[madspeed]

that'd be the one you want then

 

[maverick owens]

i am doing a 1989 240sx 5.0 swap and i want to go EFI with a t5 tranny what wiring harness would be best and what all do i need for it .THANKS

 

[jrichker]

The 89 Mustang 5.0 harness if you want a used harness.

Ford Racing has an aftermarket harness if you want to shell out $500.

Here's website with lots of wiring help.


Diagrams courtesy of Tmoss & Stang&2birds

Complete computer, actuator & sensor wiring diagram for 88-91 Mass Air Mustangs

See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ - Wiring & Engine Info Everyone should bookmark this site.

Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 88-91 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

Ignition switch wiring
http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

Fuel, alternator, A/C and ignition wiring
http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

O2 sensor wiring harness
http://www.veryuseful.com/mustang/tech/engine/images/mustangO2Harness.gif

Vacuum diagram 89-93 Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

HVAC vacuum diagram
http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

TFI module differences & pin out
http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

Fuse box layout
http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif

87-92 power window wiring
http://www.veryuseful.com/mustang/tech/engine/images/mustang87-92 PowerWindowWiring.gif

93 power window wiring
http://www.veryuseful.com/mustang/tech/engine/images/mustang93PowerWindows.gif

T5 Cutaway showing T5 internal parts
http://www.veryuseful.com/mustang/tech/engine/images/5_Speed_Cutaway_Illustrated.jpg

Visual comparison of the Ford Fuel Injectors, picture by TMoss:
http://www.veryuseful.com/mustang/tech/engine/images/Ford_Injector_Guide.jpg