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1979 Ford Bronco F100-F350 Windshield Wiper Wiring Diagram - Conventional & Interval
Reference · 1978-1979 BroncoAll 116 wiring diagrams
Wiring diagram for conventional and interval windshield wipers including wiper motor, governor, and circuit paths.
Part of 1978-1979 Ford Bronco Wiring Diagrams
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.
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