What fuse powers the windshield wipers on a 1979 Ford Bronco/F-Series?

Fuse 11, rated 15 Amps, feeds both the conventional and interval wiper circuits from a 'Hot At All Times' source; another feed is hot when the ignition switch is in Run or Accy.

What wire colors run to the windshield wiper motor?

The wiper motor circuits are 56 bl (blue), 58 w/o (white/orange), 28 bk/w (black/white), and 63 r (red).

What extra component does the interval wiper system use?

The interval system adds a Windshield Wiper Governor module and a 2-Speed-Intermittent windshield wiper washer switch, wired through connectors C504 and C502, with additional circuits 296 r, 297 bk/gr, 941 bk/w, and 57 bk.

What wire feeds the windshield washer pump motor?

Circuit 951 gr/bk (green/black) feeds the washer pump motor, which grounds through black (bk) wires via splice S805 to ground G701.

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1979 Ford Bronco F100-F350 Windshield Wiper Wiring Diagram - Conventional & Interval

Windshield wiper wiring diagram for conventional and interval wipers with motor

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Wiring diagram for conventional and interval windshield wipers including wiper motor, governor, and circuit paths.

AI caption August 2014 · Photo 37 of 48

This page (page 37) from a 1979 Ford Bronco/F100–F350 wiring diagram set shows the windshield wiper and washer circuits in two side-by-side schematics: Conventional Wipers (left) and Interval Wipers (right). Both circuits are powered through Fuse 11 (15 Amps) on a 'Hot At All Times' feed, plus a feed that is 'Hot When Ignition Switch In Run Or Accy.' The conventional system shows the windshield wiper washer switch (OFF/LOW/HI), the two-speed windshield wiper motor, and the windshield washer pump motor. The interval system adds a 2-speed-intermittent wiper/washer switch (Intermittent/Off/Low/High) and a windshield wiper governor module. Wire circuit numbers and color codes are labeled throughout, including 763 o/w, 950 w/bk, 951 gr/bk, 56 bl, 58 w/o, 28 bk/w, 63 r, 296 r, 297 bk/gr, 941 bk/w, and 57 bk. Connectors C501, C502, C504, and C505, splice S805, and grounds G701 and G502 are identified. A reader can use this diagram to trace wiper/washer wiring, identify wire colors at the switch, governor, wiper motor, and washer pump, and locate the fuse and ground points for troubleshooting.

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Frequently asked questions

What fuse powers the windshield wipers on a 1979 Ford Bronco/F-Series?: Fuse 11, rated 15 Amps, feeds both the conventional and interval wiper circuits from a 'Hot At All Times' source; another feed is hot when the ignition switch is in Run or Accy.
What wire colors run to the windshield wiper motor?: The wiper motor circuits are 56 bl (blue), 58 w/o (white/orange), 28 bk/w (black/white), and 63 r (red).
What extra component does the interval wiper system use?: The interval system adds a Windshield Wiper Governor module and a 2-Speed-Intermittent windshield wiper washer switch, wired through connectors C504 and C502, with additional circuits 296 r, 297 bk/gr, 941 bk/w, and 57 bk.
What wire feeds the windshield washer pump motor?: Circuit 951 gr/bk (green/black) feeds the washer pump motor, which grounds through black (bk) wires via splice S805 to ground G701.
Which connectors and grounds are shown in these wiper circuits?: Connectors C501, C502, C504, and C505; splice S805; and grounds G701 and G502.