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1970 Ford Bronco Windshield Wiper & Washer Wiring Diagram - Fig. 10.91
Reference · 1966-1977 BroncoAll 10 wiring diagrams
Wiring diagram for the windshield wiper and washer circuits showing the wiper motor, washer pump and color-coded wiring.
Part of 1966-1977 Ford Bronco Wiring Diagrams
This document is a scanned page from a factory-style wiring diagram, labeled 'Fig. 10.91 Wi...' (caption cut off), showing the windshield wiper and washer circuit for a vintage Ford vehicle. Power comes from a buss bar through fuse F-2 via circuit 297 BK-GR and 0-Y wiring, splice S-302, and feeds the windshield wiper/washer switch through connector C-301 on circuits 950 W-BK and 763 O-W. The switch outputs travel on circuits 56 BL (blue), 58 W-O (white-orange), 28 BK-W (black-white), and 63 R (red) through connectors C-302, C-303, and C-304 to the windshield wiper motor, which is grounded through a ground strap to G-303. The washer pump motor is fed by circuit 951 GR-BK through connector C-305, with ground on 57 BK. A footnote (Note A) explains that when the windshield washer switch is pushed to the WASH position, the wiper switch is mechanically cammed to its LO position. Readers can learn wire circuit numbers, color codes, connector identifiers, and grounding points needed to diagnose wiper/washer problems on this vehicle.
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Frequently asked questions
- What wire circuits feed the windshield wiper/washer switch?
- Circuits 950 W-BK (white-black) and 763 O-W (orange-white) feed the wiper/washer switch through connector C-301, sourced from fuse F-2 via 297 BK-GR and 0-Y wiring at splice S-302.
- What connector goes to the windshield wiper motor?
- Connector C-304 carries circuits 56 BL, 58 W-O, and 28 BK-W to the windshield wiper motor, which is grounded through a ground strap to G-303.
- What wire powers the windshield washer pump motor?
- Circuit 951 GR-BK (green-black) through connector C-305 feeds the W/S washer pump motor; its ground is circuit 57 BK.
- What happens when the washer switch is pushed to WASH?
- Per Note A on the diagram: when the windshield washer switch is pushed to the WASH position, the windshield wiper switch is cammed to its 'LO' position.
- Which fuse protects the wiper circuit in this diagram?
- Fuse F-2, fed from the buss bar via circuit 297 BK-GR, supplies the wiper/washer circuit.
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