Which vehicles does this speed control wiring diagram cover?

FIG. 6 on this page covers the F-100 through F-350 and Bronco; the top of the page shows the end of FIG. 5, which covers E-100 through E-350 vans.

What size fuse does the cruise control system use?

The diagram shows a 20 amp fuse in the fuse panel on the ignition switch feed, and a second 20 AMP fuse on the +12V feed to the brake switch circuit.

What are the wire colors for the cruise control circuits?

Per the legend: circuit 1 = blue w/yellow stripe, 460 = yellow, 57 = black, 614 = grey, 810 = red/black, 151 = lt blue/black, 297 = black/green, 828 = brown/lt green, 827 = yellow/red, 735 = purple/lt blue, 826 = white/pink, 825 = gray/black, 734 = orange/yellow, 46DA = yellow.

Which connectors join the amplifier assembly to the harness?

Connector C-714 and connector C-717; C-717 is also identified as the amplifier central grounding point.

What resistor values are in the speed control switch circuit?

The switch (with COAST, SET, OFF and ON positions) uses a 680 ohm and a 120 ohm resistor.

Home/ Registry/ Ford/ Bronco/ 1978-1979/ “buyers guide”/ Photo supermotors.net/registry/media/987584

Ford F-100–F-350 & Bronco Cruise Control Wiring Diagram - Speed Control 37-01-5

Ford F-100 to F-350 and Bronco Speed Control System wiring diagram, Fig 6

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Speed control (cruise) system wiring diagram for Ford F-100/F-350 and Bronco showing servo assembly, amplifier, speed sensor, brake switches, 20A fuse and the wire color/stripe code table by circuit number.

AI caption July 2013 · Photo 86 of 104

This is a scanned page (37-01-5) from a Ford shop manual section covering the Speed Control (cruise control) System. The page presents FIG. 6, the speed control wiring diagram for F-100 through F-350 trucks and the Bronco (the top of the page shows the tail of FIG. 5, the E-100–E-350 diagram). The schematic traces cruise control circuits from the servo assembly through a grommet in the dash panel to the amplifier assembly via connectors C-714 and C-717, and shows the amplifier central grounding point. Other components shown include the speed sensor, horn relay, horn, horn switch, turn signal switch with the OFF/ON/SET/COAST speed control switch (with 680 ohm and 120 ohm resistors), ignition switch, a 20 amp fuse in the fuse panel, brake switches (plunger and mechanical types), fusible link, connectors X and Y, and part of the 14401 wiring assembly. A wire color legend table lists circuit numbers (1, 460, 57, 614, 810, 151, 297, 828, 827, 735, 826, 825, 734, 46DA) with their primary colors, secondary colors, and stripe indication. Reference code L2154-2D appears at lower right. Readers can identify cruise control wire colors, circuit routing, and component connections for troubleshooting.

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Frequently asked questions

Which vehicles does this speed control wiring diagram cover?: FIG. 6 on this page covers the F-100 through F-350 and Bronco; the top of the page shows the end of FIG. 5, which covers E-100 through E-350 vans.
What size fuse does the cruise control system use?: The diagram shows a 20 amp fuse in the fuse panel on the ignition switch feed, and a second 20 AMP fuse on the +12V feed to the brake switch circuit.
What are the wire colors for the cruise control circuits?: Per the legend: circuit 1 = blue w/yellow stripe, 460 = yellow, 57 = black, 614 = grey, 810 = red/black, 151 = lt blue/black, 297 = black/green, 828 = brown/lt green, 827 = yellow/red, 735 = purple/lt blue, 826 = white/pink, 825 = gray/black, 734 = orange/yellow, 46DA = yellow.
Which connectors join the amplifier assembly to the harness?: Connector C-714 and connector C-717; C-717 is also identified as the amplifier central grounding point.
What resistor values are in the speed control switch circuit?: The switch (with COAST, SET, OFF and ON positions) uses a 680 ohm and a 120 ohm resistor.