|  |  | | | 1972 Ford Truck Wiring Diagrams | | |  | | NOTE - PLEASE READ!
The following wiring diagram is an EXTREMELY LARGE file! It consists of the contents of EIGHT pages that have been stitched together into a single file. In fact, I have personally invested more than 100 man-hours into this diagram. Please be patient while it downloads. If you're on a dial-up account, I feel sorry for ya! Because of the physical dimensions of this file, some older computers with limited resources might be unable to properly display it. Therefore, this file has also been broken down into seven smaller files which can be viewed and/or downloaded below. To save to your computer for future use, just right-click on the thumbnails below and choose "Save Link As...". The diagram legend is also displayed below for help in deciphering the diagram contents. | | |  | 
4187p x 1536p ~ 1.01MB | Connector Legend
Every harness connection in the above main wiring diagrams is labeled with a connector ID number. Refer to the legend at left for correct connector pin-out. | | NOTE: This legend is accurately replicated from the original OEM factory wiring diagrams, including three connectors (C-24, C-38, C-80) which have the same connector ID number but multiple differing pin-out variations. Therefore, be sure the diagram you're referring to on this legend coincides with the connector's physical location in the wiring harness. The connectors with identical ID numbers but different pin-outs are labeled to show their location on the Master Wiring Diagram. | Everything shown below this point will help you locate and identify the various components, connectors, splices and grounds shown in the above diagram(s). All links will open in a new window, to allow this page to remain open for reference.
| Wire Code |  To Ignition Switch  Direct to Battery  Bus Bar | | Ground Codes | - G-1 - Eyelet attached to engine block
- G-2 - Eyelet attached to engine block
- G-3 - Eyelet attached to center of the dash panel
- G-4 - Eyelet attached to "Y" brace under instrument panel
- G-5 - Eyelet on heater case
- G-6 - Eyelet attached to R.H. inner cowl side panel
- G-7 - Eyelet attached to frame crossmember
- G-8 - Eyelet attached to cab inner back panel
- G-9 - Eyelet attached to R.H. radiator support
- G-10 - Eyelet attached to L.H. radiator support
- G-11 - Eyelet attached to dash panel L.H. side
- G-12 - Eyelet attached to rear quarter panel L.H. side
- G-13 - Eyelet attached to rear quarter panel R.H. side
- G-14 - Eyelet attached to L.H. cowl panel
- G-15 - Eyelet attached to L.H. side of platform frame rear
- G-16 - Eyelet attached to rear lamp bracket L.H. and R.H. side
- G-17 - Eyelet attached to rear end of frame L.H. and R.H. side
- G-18 - Eyelet attached to L.H. side of stone shield
- G-19 - Eyelet attached to voltage regulator mounting screw
- G-20 - Eyelet attached to speedometer mounting screw
| | Splice Codes | - S-1 - In 14305 Wiring Assy. (Standard instrument cluster)
- S-2 - In 14305 Wiring Assy. (R.P.O. cluster)
- S-3 - In 14305 Wiring Assy. (R.P.O. cluster)
- S-4 - In 14401 Wiring Assy. near fuse panel
- S-5 - In 14401 Wiring Assy. near ignition switch or fuse panel
- S-6 - In 14401 Wiring Assy. near R.H. hood hinge (standard cluster)
- S-7 - In 14401 Wiring Assy. near ignition switch
- S-8 - In Camper 14405 Wiring Assy.
- S-9 - In Camper 14405 Wiring Assy.
- S-10 - In Camper 14405 Wiring Assy.
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