What vehicles does this wiring diagram cover?

The diagram states it applies to 1981 through 1983 Ford F-Series and Bronco vehicles (page 2 of 4).

What systems are shown on this page?

It covers the fuse block and underdash wiring, including the engine electronic control processor, EEC power relay, EGR solenoids, throttle actuator, coolant temp and crankshaft timing sensors, A/C clutch solenoid/thermostat, windshield wiper/washer motor, and fuse box circuits like HAZ./STOP, heater & A/C, radio, power window, horn, and courtesy light.

Who published this diagram?

Does the diagram note any California-only components?

Yes — a mileage sensor is labeled '4.9L CA ONLY', and at least one wire is labeled 'YEL (GA ONLY)'.

Which engine exclusion is noted for the engine electronic control processor?

The processor block is labeled '(V-8 EXC 400 C.I.)', indicating V-8 engines except the 400 cubic inch.

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1981-1983 Ford F-Series/Bronco Wiring Diagram - Fuse Block & Underdash (2 of 4)

1981-1983 Ford F-Series/Bronco fuse block and underdash wiring diagram (sheet 2)

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1981-1983 F-Series/Bronco fuse block & underdash wiring diagram (Mitchell) covering EEC control processor, sensors, solenoids and fuse box circuits with wire color codes.

AI caption June 2003 · Photo 152 of 459

This document is page 2 of a 4-page wiring diagram set titled 'FUSE BLOCK & UNDERDASH', covering 1981 through 1983 Ford F-Series and Bronco vehicles (Copyright © 1994, Mitchell International). The schematic shows underdash and engine-management wiring, including the engine electronic control processor (V-8 exc. 400 C.I.), throttle actuator, barometric pressure sensor, EEC power relay, mileage sensor (4.9L CA only), crankshaft timing sensor, coolant temp sensor, canister purge solenoid, EGR solenoids (vent, pressure, port), throttle angle position solenoid, air dump and carb float solenoids, electric choke, stepper motor, windshield wiper/washer motor, A/C clutch solenoid and thermostat, and the V.I.P. test connector. The lower-center section depicts the fuse box with circuit callouts such as HAZ./STOP, HEATER & A/C, 4WD CRUISE MOD, RADIO, POWER WINDOW, COURTESY LIGHT, HORN, INSTRUMENT LIGHTS, warning lights, horn relay (cruise control only), fog light relay, exterior light buzzer, and beam select switch. Wire runs are annotated with color codes (e.g., LT GRN-RED, DK GRN-YEL, TAN-WHT, RED-LT BLU). A reader can trace circuit paths and wire colors between the fuse block, EEC system, and underdash accessories, though individual fuse amperage ratings are not legible at this scan resolution.

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Frequently asked questions

What vehicles does this wiring diagram cover?: The diagram states it applies to 1981 through 1983 Ford F-Series and Bronco vehicles (page 2 of 4).
What systems are shown on this page?: It covers the fuse block and underdash wiring, including the engine electronic control processor, EEC power relay, EGR solenoids, throttle actuator, coolant temp and crankshaft timing sensors, A/C clutch solenoid/thermostat, windshield wiper/washer motor, and fuse box circuits like HAZ./STOP, heater & A/C, radio, power window, horn, and courtesy light.
Who published this diagram?: The footer states 'Wiring diagram, Copyright © 1994, Mitchell International, all rights reserved.'
Does the diagram note any California-only components?: Yes — a mileage sensor is labeled '4.9L CA ONLY', and at least one wire is labeled 'YEL (GA ONLY)'.
Which engine exclusion is noted for the engine electronic control processor?: The processor block is labeled '(V-8 EXC 400 C.I.)', indicating V-8 engines except the 400 cubic inch.