FORDification.com
   (powered by Google)


  HOME

  Technical Articles

  Factory Literature

  Discussion Forums

  Photo Galleries

  The BumpWiki

  Service Bulletins (TSBs)

  Decoding Your VIN

  Diagrams & Schematics

  Links & Resources

  In the Movies

  Downloads
  Member Meet & Greets

  In the Media

  Site Index

 MISC / PERSONAL

  My Truck Projects

  My Heinz 57 '67

  I've Been Censored!

  Contact



You are here: Home Tech Articles & Tutorials Diagrams & Schematics Wiring and Electrical
Back to Diagrams and Schematics Index

Technical Drawings and Schematics - Section H
Wiring Diagrams

Wiring diagrams and misc. info are presented below.
To view exploded-view schematics of electrical-related parts, visit Technical Drawings and Schematics - Section I

PLEASE READ: Most of the wiring diagrams posted on this page are scans of original Ford diagrams, not aftermarket reproductions. These were scanned and posted as very large files, to preserve their readability. The 1969 diagrams and all others marked with a red asterisk (*) were sent to via e-mail from various sources, so their quality and/or size might not be as good or as detailed, however I still gratefully acknowledge those who took the time to forward them for posting. Eventually all diagrams posted here will be hi-resolution for easier reading.

The 1972 Master Wiring Diagram is extremely detailed, and is a professional-quality recreation of the OEM diagrams. In fact, I have nearly 100 man-hours invested into it's construction.

 

 1967 Wiring Schematics
1967 F-100 thru F-350 instrument panel


1967 Master Wiring Diagram

1967 F-100 thru F-350 ignition, charging, starting, and gauges
1967 F-100 thru F-750 & B-500 thru 750 horn
1967 F-100 thru F-350 exterior lights and turn signals - 01
1967 F-100 thru F-350 exterior lights and turn signals - 02
1967 F-100, F-250 interior and instrument lights & lighter
1967 F-100, F-250 courtesy light
1967 F-100 thru F-350 roof & platform marker lights
1967 F-100 thru F-350 windshield wiper and washer
1967 F-100 thru F-350 auxiliary fuel tank
1967 F-100 thru F-350 truck transmissions
1967 Ford overdrive
1967 F-100 series overdrive
   

 1968 Wiring Schematics

1968 F-100 thru F-350 Wiring Manual - front cover
1968 F-100 thru F-350 Wiring Manual - inside front cover
1968 F-100 thru F-350 Wiring Manual - diagrams legend
1968 F-100 thru F-350 instrument panel
1968 F-500 thru F-750 instrument panel
1968 F-100 thru F-750 and B-500 thru F-750 instrument panel (Model 84)
1968 F-100 thru F-750 and B-500 thru F-750 65-amp alternator
1968 F-100 thru F-350 ignition, starting, charging and gauges (1 of 2)
1968 F-100 thru F-350 ignition, starting, charging and gauges (2 of 2)
1968 F-100 thru F-350 and B-500 thru B-750 horns
1968 F-100 thru F-350 windshield wiper and washer
1968 F-100 thru F-350 exterior lights and turn signals (1 of 2)
1968 F-100 thru F-350 exterior lights and turn signals (2 of 2)
1968 F-100 thru F-350 interior lights, instrument lights and cigar lighter
1968 F-100 and F-250 auxiliary fuel tank
1968 F-100 overdrive
1968 F-100 thru F-350 automatic transmission
1968 F-100 thru F-350 rear lights (1 of 2)
1968 F-100 thru F-350 rear lights (2 of 2)
1968 F-100 and F-250 courtesy and cargo lights
1968 F-100 and F-250 roof and platform marker lights
1968 F-350 roof and platform marker lights
1968 F-100 thru F-350 camper wiring
   

 1969 Wiring Schematics

1969 F-100 thru F-350 instrument panel
1969 F-100 thru F-350 ignition, charging, starting, and gauges - 01
1969 F-100 thru F-350 ignition, charging, starting, and gauges - 02
1969 F-100 thru F-350 alternator, 65-amp (Models 81 & 85)
1969 F-100 thru F-350 gauges
1969 F-100 thru F-350 exterior lights and turn signals
1969 F-100 overdrive transmission
1969 F-100 thru F-350 automatic transmission
1969 F-100, F-250 courtesy lights
1969 F-100, F-250 courtesy and cargo lights
1969 F-100, F-250 rear lights (Model 99) - 01
1969 F-100, F-250 rear lights (Model 99) - 02
1969 F-100, F-250 rear lights (Model 83) - 01
1969 F-100, F-250 rear lights (Model 83) - 02
1969 F-350 marker lights
1969 F-100, F-250 roof and platform marker lights
1969 F-100 thru F-350 interior/instrument lights & cigar lighter (Models 81 & 85)
1969 F-100 thru F-350 rear lights (Models 80 & 86)
1969 F-100 thru F-350 exterior lights and turn signals (Models 81 & 86)
1969 F-100 thru F-350 dual brake warning light
1968 F-100 thru F-350 horn circuit (see NOTE below)
1969 F-100 thru F-350 windshield washer pump (Models 81 & 85)
1969 F-250, F-350 camper wiring
1969 F-100 thru F-350 Power-Pak
1969 F-100 thru F-350 heater
1969 F-100 thru F-350 air conditioner
1969 F-100, F-250 auxiliary fuel tank (Model 81)
1969 F-100 thru F-350 fuse panel

  NOTE: The '68 horn circuit diagram was included with the '69 diagrams, since they were identical.
   
 1970 Wiring Schematics
1970 F-100, F250 master diagram
1970 F-350 master diagram
1970 F-100, F250 lamp wiring - 01
1970 F-100, F250 lamp wiring - 02
1970 F-350 cowl models lamp wiring - 01
1970 F-350 cowl models lamp wiring - 02
1970 F-250, F-350 platform/stake rear lamp wiring - 01
1970 F-250, F-350 platform/stake rear lamp wiring - 02
1970 F-250, F-350 roof & platform marker lamps
1970 F-250, F-350 Power-Pak wiring *
   

 1972 Wiring Schematics

1972 F-series quick-reference diagram *
1972 F100-F350 Master Wiring Diagram (EXTREME HI-RESOLUTION!)

 Misc. Wiring Schematics & Diagrams
Wiper Motor test
Checking windshield wiper switch continuity
1979 F100-F350 intermittent wiper switch
Ford truck wire color and gauge chart

 Adding Lights or Electrical Devices to Ford Light-Duty Trucks

The following information is reproduced directly from the 1970 Ford Body Builder's Layout book (Vol. 70 HTM2-L2). The information is applicable to all '67-'72 trucks.

1) The headlamp switches on all 1970 Ford trucks (except "W" models) employ two integral circuit breakers, one 12-amp for the headlight circuit and one 15-amp for auxiliary circuits. Connections to any point in the circuits controlled by the headlamp switch will be on the auxiliary circuit breaker, except connections to the #12 circuit (headlamp hi-beam, green wire/black stripe), the #13 circuit (headlamp low-beam, red wire/black stripe) and the #15 circuit (feed wire to the the dimmer switch, red wire/yellow stripe. Connections to the 12-13 or 15 circuits (headlamp bulb circuits) should be avoided.

If the total load on either headlamp circuit breaker exceeds the breaker rating, the headlamps or taillamps will cycle on and off indicating the overload. If this occurs, a portion of the added lights must be wired through a relay, feeding the relay coil from the headlamp switch.

The feed from added lights to be controlled by the headlamp switch should be terminated in a male bullet connector and be connected to the female bullet take-out (brown wire -- 285 circuit) on the left-hand side of the instrument panel harness (near the emergency brake). If the vehicle has roof marker lights, this bullet will be occupied by the feed from the roof wires. In this case fabricate a "Y" jumper to permit both connections to the single connector.

Rear lights to be controlled by the headlight switch can be spliced into the #285 circuit (brown wire) at any point in the taillamp harness.

NOTE: The special Camper option on light trucks provides a plug connector on the left-hand frame rail to which taillamp connections can be made directly.

Lights controlled by Stop Lamp Switch and Turn Signal Indicator
F100 thru F350 trucks are equipped with a mechanical plunger stop lamp switch which is mounted on the brake pedal arm. This switch is designed for maximum loads usually less than the fuses or circuit breaker in the circuit, but ample for normal stop lamp loads. The maximum load is 12.5 amps and under no circumstances are loads in excess of this value permissible.

If only stop lamp function is desired for the added lights, splice into the 810 circuit (red wire/black stripe) between the stop lamp switch and the turn indicator switch.

If only turn signal function is desired for the added lights, connect right-hand lights to circuit #2 (white wire/blue stripe) and left-hand lights to circuit #3 (green wire/white stripe). This connection can be made by splicing into the wires near the parking lights or near the steering column. (See note below.)

If both turn signal and stop lamp function are desired for the added lights, splice into the taillamp loom, using circuit 282 (green wire) for right-hand lights and circuit 283 (yellow wire/black stripe) for left-hand lights. (See note below.)

NOTE
1) The turn signal switch used on light trucks has a maximum rated current of 6.5 amps for right and left turning functions and 8.0 amps for stop lamp function. Do not exceed these values on the turn signals.
2) The turn signal and emergency flasher system on light trucks utilizes two flashers, one for turn signal and one for emergency flasher function. These flashers are designed to accommodate a two-light (4.2 amps) load for the turn signal flasher and a six-light load (12.6 amps) for the emergency flasher. If one additional 2.1 amp light is added to each side (total 6 lamps) the C8AB-13350-A turn signal flasher must be replaced with a C6AB-13350-B flasher. The addition of two 2.1 amp lamps to each side (total 8 lamps) will require replacing the existing two flasher with a single C8TB-13350-A transistorized flasher and, because of the complexity, is not recommended. The addition of lights without a flasher revision will result in a very fast, unacceptable flashing rate.

Added Lights or Accessories Controlled by Added Switches
For added electrical accessories that operate only when the ignition is on -- terminate the feed wire from the hang-on switch in a bullet connector and plug into the three-way accessory plug on the instrument panel harness (single black wire/green stripe). This circuit is limited by a 14-amp fuse. Fuse "blow" requires the addition of a relay, with the coil fed by a connection to the accessory terminal.

If the added accessory is desired to be operated with the key off, the switch feed can be connected to the cigar lighter (using a "Y" jumper) if the 15-amp fuse for that circuit is sufficient. If heavier loads than the cigar lighter circuit will carry are required, the switch feed should connect to the starter relay "battery" terminal.

 

 
You are here: Home Tech Articles & Tutorials Diagrams & Schematics Wiring and Electrical


Want to link to this site? Please save this banner to your hard drive to place on your webpage.
The correct link to use is http://www.fordification.com


Copyright 1999-2013 FORDification.com unless otherwise noted. All rights reserved.
All brand names and product names used on this website are trade names, service marks or registered trademarks of their respective holders.  
No portion or content of this site may be reproduced or otherwise used without explicit permission.
To report problems or provide comments or suggestions, please click here.