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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

5.0 engine harness

  • Thread starter Thread starter 91frppgt
  • Start date Start date Feb 12, 2008
9

91frppgt

New Member
Dec 16, 2005
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Feb 12, 2008
#1
  • Feb 12, 2008
  • #1
hey guys, i'm in need of some dier help..
to the 5.0 guru's...

http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=23

is this the main harness i need to complete a 4cyl to 5.0 swap? I know i need the injector harness as well. anything else i might need to complete the engine harness besides the computer?
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
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gainesville
Feb 12, 2008
#2
  • Feb 12, 2008
  • #2
wow, I have never seen that before.kind of looks like the MAF harness. I would find a v8 the same year as you four cyl and grab all the harnesses from that. it will cost less
 

jrichker

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Feb 12, 2008
#3
  • Feb 12, 2008
  • #3
The harness you made reference to is the same one as this:

Diagram courtesy of Tmoss & Stang&2birds


And it is the correct body harness for a 5.0 Mustang.

You will need the engine fuel injector harness if it isn't already on the engine.




See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring http://www.veryuseful.com/mustang/tech/engine/

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

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

Computer, actuator & sensor wiring
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

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

Vacuum routing
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg
 

88mouse

New Member
Apr 18, 2007
630
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Mooresville nc
Feb 12, 2008
#4
  • Feb 12, 2008
  • #4
91frppgt said:
hey guys, i'm in need of some dier help..
to the 5.0 guru's...

http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=23

is this the main harness i need to complete a 4cyl to 5.0 swap? I know i need the injector harness as well. anything else i might need to complete the engine harness besides the computer?
Click to expand...

First off what year is your car?

The only aftermarket harness (like the one in your link) is for the 91-93 mustangs, If yours is in those year yes that is the one you need. If its from 86-89 you will need a 86-89 harness. 89 and 88 where the only year that had MAF (88 cali. cars only). And a 90 is a year of its own.
 

90topdown

Member
Feb 16, 2006
138
1
16
Philadelphia, PA
Feb 12, 2008
#5
  • Feb 12, 2008
  • #5
88mouse said:
First off what year is your car?

The only aftermarket harness (like the one in your link) is for the 91-93 mustangs, If yours is in those year yes that is the one you need. If its from 86-89 you will need a 86-89 harness. 89 and 88 where the only year that had MAF (88 cali. cars only). And a 90 is a year of its own.
Click to expand...

Match the harness to the year of your car. You will save yourself ALOT of headaches.

90 is definitely a year all to its' self. BTDT Installed 3 harnesses ( all wrong year) before I got one to work.
 
M

mavmavv

New Member
Nov 21, 2007
185
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Feb 12, 2008
#6
  • Feb 12, 2008
  • #6
I just bought a complete harness off ebay for 140.
 
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