What fuse ratings are shown in the 1981 Ford F-Series fuse box?

The fuse box shows: 20A hazard/stop lights, 15A directional/back-up, a heater circuit breaker (CB), 10A wiper, 10A radio, a power windows CB, 10A auxiliary fuel tank, 15A emission, a power accessory CB, 15A tail light, 15A courtesy light, 20A horn/cigar lighter, and 5A instrument lights.

What wire colors go to the blower switch on a 1981 F-Series?

The blower switch is shown with RED/ORN, Lt.BLU/ORN, and BLK/YEL wires; the blower motor resistor has H, M, and L terminals with a BLK ground.

What wire color feeds the back-up lights?

The diagram shows BLK/PNK wires running from the back-up light switch to the back-up lights, with BLK for the lamp ground/common side.

What wires connect to the light (headlight) switch?

The light switch shows BRN, RED/YEL, BLK/BLU, BLK/ORN, GRN/YEL, and TAN/WHT wires, connecting to park/tail lights, door switches, and the courtesy light.

Which circuit protects the horn and cigar lighter?

A single 20A fuse labeled HORN / CIG protects both the horn and cigar lighter circuits.

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1981 Ford F-Series/Bronco Wiring Diagram Part 1 - Fuse Box & Wire Colors

1981 Ford F-Series pickup chassis electrical wiring diagram, Chapter 12 page 12-19 part 1

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Full chassis electrical schematic for 1981 Ford F-Series pickup covering wipers, blower, lighting, fuel gauge, ignition and back-up circuits with wire color codes.

AI caption April 2012 · Photo 30 of 36

This document is page 12-19 from Chapter 12 (Chassis electrical system) of a repair manual, showing Part 1 of the full-chassis wiring diagram for the 1981 Ford F-Series Pick-up. The diagram traces circuits and wire colors for the windshield wiper/washer switch and washer motor, blower motor, blower resistor and blower switch, coolant temperature and oil pressure switches, seat belt timer/warning buzzer, instrument panel printed circuit connector (with all pin wire colors such as BLU, GRN, RED/WHT, GRN/BLK, BLU/RED), the headlight switch, ignition switch, stop light and back-up light switches, hazard flasher, low brake switch, and the directional/horn/hazard (multifunction) switch. Exterior lighting circuits are shown for the right and left marker lights, tail lights, direction lights, back-up lights, and license lights. The fuse box legend lists fuse positions and ratings: 20A hazard/stop lights, 15A directional/back-up, heater circuit breaker, 10A wiper, 10A radio, power windows circuit breaker, 10A auxiliary fuel tank, 15A emission, power accessory circuit breaker, 15A tail light, 15A courtesy light, 20A horn/cigar lighter, and 5A instrument lights. A reader can use this page to identify wire colors, fuse ratings, and component interconnections for diagnosing 1981 Ford truck electrical problems.

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Frequently asked questions

What fuse ratings are shown in the 1981 Ford F-Series fuse box?: The fuse box shows: 20A hazard/stop lights, 15A directional/back-up, a heater circuit breaker (CB), 10A wiper, 10A radio, a power windows CB, 10A auxiliary fuel tank, 15A emission, a power accessory CB, 15A tail light, 15A courtesy light, 20A horn/cigar lighter, and 5A instrument lights.
What wire colors go to the blower switch on a 1981 F-Series?: The blower switch is shown with RED/ORN, Lt.BLU/ORN, and BLK/YEL wires; the blower motor resistor has H, M, and L terminals with a BLK ground.
What wire color feeds the back-up lights?: The diagram shows BLK/PNK wires running from the back-up light switch to the back-up lights, with BLK for the lamp ground/common side.
What wires connect to the light (headlight) switch?: The light switch shows BRN, RED/YEL, BLK/BLU, BLK/ORN, GRN/YEL, and TAN/WHT wires, connecting to park/tail lights, door switches, and the courtesy light.
Which circuit protects the horn and cigar lighter?: A single 20A fuse labeled HORN / CIG protects both the horn and cigar lighter circuits.