What size is the back-up light fuse?

The diagram shows a 15A back-up light fuse, and also a separate 15A back-up/washer fuse near the windshield wiper circuit.

What wire colors go to the blower switch?

The blower switch is shown with RED/BLK, BLU/RED, and BLK/YEL wires, with a BLK/YEL wire to the blower motor through the H-M-L blower motor resistor.

What systems does this chassis electrical diagram cover?

It covers the blower motor, instrument panel printed circuit connector, lighting (headlights, tail, back-up, direction, license, marker, park lights), hazard flasher, stop light switch, ignition switch, directional switch, battery, starter and starter relay, alternator and regulator, fusible link, horn relay, windshield wiper/washer, ignition coil, noise filter, distributor, ignition module, and the neutral/clutch safety switch.

What diagram/drawing numbers appear on these pages?

The left page diagram is numbered 85766101 and the right page diagram is 85766102; the page is labeled 6-30, Chassis Electrical.

Home/ Registry/ Ford/ Bronco/ 1978-1979/ “Bronkster”/ Photo supermotors.net/registry/media/671116

1978 Ford Bronco Chassis Electrical Wiring Diagram - Fuse Box & Wire Colors

Scanned 6-30 Chassis Electrical manual page with blower, lighting, and wiper wiring diagrams

‹ ›

Reference · 1978-1979 BroncoAll 116 wiring diagrams

1978 Ford Bronco Chassis Electrical Wiring Diagram - Fuse Box & Wire Colors

1978 Ford Bronco Chassis Wiring Diagram - Lighting, Charging & Wiper Circuits

1976-78 Ford F-Series Chassis Wiring Diagram - Dash, Fuse Box & Engine Circuits

1970-78 Ford F-Series Chassis Wiring Diagram - Fuse Box, Lights & Charging

1978-79 Ford F-Series Chassis Wiring Diagram - Fuse Box, Lighting & Charging

1976-78 Ford F-Series Wiring Diagram - Chassis Electrical, Fuse Box & Ignition

Ford Bronco Wiring Diagram - Ignition, Wiper Motor & Back-Up Light Circuits

1979 Ford Bronco Radio Connector Wiring Diagram C-530 & C-532 Pinouts

1979 Ford Bronco Radio & CB Wiring Diagram - AM/FM, Speakers, Connectors

2-Speed Taurus Electric Fan Wiring Diagram - Holley Sniper EFI Relay Schematic

116wiring diagrams1978-1979 Ford Bronco More reference

Bronco Driver magazine cover with No. 300 race Bronco airborne in the desert and inset Bronco photos

Brochure

Ford vehicle identification plate on green painted metal, stamped characters too blurred to read

Spec plate

Schematic

Exploded parts

Ford Bronco Manual: Engine Compartment Service Points & Engine Oil Recommendations

Manual page

Battle Born Brakes Hydroboost Install Pg 4 - Bench Bleeding & Hose Routing Diagram

Service procedure

1978 Ford Bronco Custom Bumper Build - SolidWorks CAD Assembly Screenshot

Blueprint

1979 Ford Bronco & F100-F350 Vacuum Distribution Diagram - Hose Routing

Vacuum routing

1979 Ford Bronco & F100-F350 Fuse Block Diagram - Fuse Positions & Amp Ratings

Fuse chart

Edelbrock 7166 Performer RPM Intake Manifold Bolt Torque Sequence Diagram

Torque spec

Scanned chassis-electrical manual page detailing blower motor, lighting, ignition, and wiper wiring circuits with color codes.

Part of 1978-1979 Ford Bronco Wiring Diagrams

AI caption September 2008 · Photo 1161 of 1493

This scan shows two facing pages (page 6-30, "Chassis Electrical") from an automotive service reference containing full-chassis wiring diagrams, drawing numbers 85766101 and 85766102. The left diagram covers the interior/lighting circuits: blower motor and resistor, blower switch, instrument panel printed circuit connector (with pin wire colors such as RED/WHT, GRN/BLK, BLU/RED, WHT/RED, ORN, GRN/WHT, WHT/BLU), coolant temperature and oil pressure switches, hazard flasher, stop light switch, light switch, low brake switch, ignition switch, directional switch and flasher, plus tail, back-up, direction, license, and marker lights. It also includes a fuse box legend listing fuse positions and amperages: INST LT 3A, HEATER 30A, FUEL TANK 15A, RADIO 7.5A, SEAT BELT 7.5A, B/U WIPER 15, THROTTLE SOL., ACC. 20A, DIRECT. 15, CTSY/CIG 15, and HAZ/STOP LT 20A. The right diagram covers engine bay/front circuits: battery, starter and starter relay, alternator and regulator, fusible link, headlights and beam select switch, horn relay, windshield wiper motor and switch with 15A back-up/washer fuse, back-up light switch and 15A fuse, neutral/clutch safety switch, ignition coil, noise filter, distributor, and ignition module, with wire color codes throughout. Uploaded to a 1978 Ford Bronco gallery; the document itself is undated.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What fuses and amperages are shown in the fuse box on this diagram?: The fuse box legend lists: INST LT 3A, HEATER 30A, FUEL TANK 15A, RADIO 7.5A, SEAT BELT 7.5A, B/U WIPER 15, THROTTLE SOL., ACC. 20A, DIRECT. 15, CTSY/CIG 15, and HAZ/STOP LT. 20A.
What size is the back-up light fuse?: The diagram shows a 15A back-up light fuse, and also a separate 15A back-up/washer fuse near the windshield wiper circuit.
What wire colors go to the blower switch?: The blower switch is shown with RED/BLK, BLU/RED, and BLK/YEL wires, with a BLK/YEL wire to the blower motor through the H-M-L blower motor resistor.
What systems does this chassis electrical diagram cover?: It covers the blower motor, instrument panel printed circuit connector, lighting (headlights, tail, back-up, direction, license, marker, park lights), hazard flasher, stop light switch, ignition switch, directional switch, battery, starter and starter relay, alternator and regulator, fusible link, horn relay, windshield wiper/washer, ignition coil, noise filter, distributor, ignition module, and the neutral/clutch safety switch.
What diagram/drawing numbers appear on these pages?: The left page diagram is numbered 85766101 and the right page diagram is 85766102; the page is labeled 6-30, Chassis Electrical.