Back in the Day this was a Popular Upgrade to the 05-09 Mustangs. This Process was Supplied My Marcello Canitano of Silver Horse Racing. It Used to be on his website as a Free Download but came down at some point. I also thought we had a Post on it Somewhere in My Old Gt-500 Conversion Topics. I asked him for a copy while emailing him on another Topic as I thought There still might be some interest in the Info. I do not know if The Ford Wiring Harness is Still Available or How Easy you can find a Radio Shack These Days But here is the Info None The Less. Use at Your Own Risk. Differences in Harnesses were due to These Parts Options.

UPDATE 07/21/22 Wiring Harness Obsolete. Be advised Ford Offered Different HID Harnesses For Certain Options. It is My Opinion That Sourcing a Used Harness from an Hid Car would be best Served By Getting a Shelby Harness for a Shelby and a Base/GT From a Base or Gt/ Harness. One Listed was Base G/T Cars. If I wanted to do this Upgrade I would Get Wiring Diagram of Halogen Vs Hid and See what was Different besides Actual Headlight Bulbs Pigtail. This is not a Mod for the Faint of Heart and could turn Bad real Quick.

Differences in Harnesses were due to These Parts Options.
EXAMPLE Below.

• Fit Note: High Intensity Discharge Headlamp, Perimeter Alarm W/Intruder/Sensor, With
  Front Fog Lamps

SEE PDF.

KC

 

UPDATED WITH 2008 Wiring Diagrams! Also Shop Manual Section on Headlights!

Need Used Headlight Harness Out of Similar Car. Base For Base, Gt For Gt, Gt-500 for Gt-500, Just With HID'S
Check For Alarm, Pony Package Bullitt {Less Fogs} Etc.

Good Luck!

Mgb,

KC

Parts Reference Look At 14290 Harnesses


https://www.fordpartsgiant.com/parts...nsmission.html


Mgb,

KC

 

Wire Assy
7R3Z-14290-EB
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fitting Vehicle Options:
8 Cyl 5.4L DOHC EFI S/C
ALUM
Base Number:
14290
Callout Name:
14290


Ford 8R3Z-14290-AA
8R3Z-14290-AA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
Less Anti-Theft Alarm, Less
Front Fog Lamps
Fitting Vehicle Options:
6 Cyl 4.0L SOHC EFI
Base Number:
14290
Callout Name:
14290


8R3Z-14290-BA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
Less Anti-Theft Alarm, With Front Fog Lamps, With Front Fog Lamps #2
Fitting Vehicle Options:
6 Cyl 4.0L SOHC EFI, 8 Cyl
4.6L SOHC EFI
Base Number:
14290
Callout Name:
14290


Ford 8R3Z-14290-CA
8R3Z-14290-CA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
Less Front Fog Lamps, Perimeter Alarm W/Intruder/Sensor, With Halogen Headlamp
Fitting Vehicle Options:
6 Cyl 4.0L SOHC EFI
Base Number:
14290
Callout Name:
14290


Ford 8R3Z-14290-DA
8R3Z-14290-DA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
Perimeter Alarm W/Intruder/Sensor, With Front Fog Lamps, With Front Fog Lamps #2, With Halogen Headlamp
Fitting Vehicle Options:
6 Cyl 4.0L SOHC EFI, 8 Cyl
4.6L SOHC EFI
Base Number:
14290
Callout Name:
14290


8R3Z-14290-EB
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
With Halogen Headlamp
Production Date:
06/2007-12/2007
Fitting Vehicle Options:
8 Cyl 5.4L DOHC EFI S/C
ALUM
Base Number:
14290
Callout Name:
14290


Ford 8R3Z-14290-EC
8R3Z-14290-EC
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
With Halogen Headlamp
Production Date:
12/2007-02/2009
Fitting Vehicle Options:
8 Cyl 5.4L DOHC EFI S/C
ALUM
Base Number:
14290
Callout Name:
14290


Ford 8R3Z-14290-FA
8R3Z-14290-FA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
High Intensity Discharge Headlamp, Less Front Fog Lamps
Fitting Vehicle Options:
6 Cyl 4.0L SOHC EFI
Base Number:
14290


Callout Name:
14290
Ford 8R3Z-14290-GA
8R3Z-14290-GA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
High Intensity Discharge Headlamp, Perimeter Alarm W/Intruder/Sensor, With Front Fog Lamps
Fitting Vehicle Options:
6 Cyl 4.0L SOHC EFI, 8 Cyl
4.6L SOHC EFI
Base Number:
14290
Callout Name:
14290


8R3Z-14290-HA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
High Intensity Discharge
Headlamp
Production Date:
06/2007-12/2007
Fitting Vehicle Options:
8 Cyl 5.4L DOHC EFI S/C
ALUM
Base Number:
14290
Callout Name:
14290


8R3Z-14290-HAA
Wiring Assy
Service Wire Harness May Contain Extra Connectors. Consult TSB 06-17-8 For Service Procedures
Fit Note:
High Intensity Discharge
Headlamp
Production Date:
12/2007-02/2009
Fitting Vehicle Options:
8 Cyl 5.4L DOHC EFI S/C
ALUM
Base Number:
14290
Callout Name:
14290