What wire colors feed the headlamps in this daytime running lamps diagram?

Circuit 12 LG/BK (light green/black) and 160 DB/W (dark blue/white) feed the left headlamp through connector C143, while 12 LG/BK and 161 DG/O (dark green/orange) feed the right headlamp through connector C133. Ground is circuit 57 BK.

Where do the headlamps ground in this diagram?

The left headlamp grounds through splice S106 to ground G104 (see Grounds page 10-6), and the right headlamp grounds through splice S104 to ground G103 (see Grounds page 10-5), both on circuit 57 BK.

What does the Main Light Switch do in the HEAD position?

Per the callout, the Main Light Switch (page 13-17) in the HEAD position allows current to flow to the Dimmer/Flash-to-Pass function of the multi-function switch.

Which pages cover switch testing for this circuit?

The diagram references page 149-1 for Main Light Switch testing and page 149-4 for Multi-Function Switch (dimmer/flash-to-pass) testing.

What fuses are involved in the daytime running lamps circuit?

The diagram shows a 30A fuse in the Power Distribution Box (page 13-2) and fuses in the Junction Box Fuse/Relay Panel (pages 13-15/13-16) including a 20A fuse (position 16) and 10A fuses (positions shown as 2 and 26; some markings partially legible).

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1998 Ford Daytime Running Lamps Wiring Diagram 097-001 - Headlamp Circuit

Daytime running lamps wiring diagram 097-001 with fuse panel, headlamps and DRL

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Automotive wiring diagram for daytime running lamps showing the fuse/relay panel, main light switch and left and right headlamps with color-coded circuits.

AI caption April 2009 · Photo 853 of 4867

This document is page 097-001, "Daytime Running Lamps," from a Ford electrical/vacuum troubleshooting manual (EVTM). It is a wiring diagram tracing the headlamp and daytime running lamp circuits from a hot-at-all-times feed through the Power Distribution Box (page 13-2), the Main Light Switch (page 13-17, switch testing page 149-1), and the Multi-Function Switch containing the Flash-to-Pass and Dimmer switches (testing page 149-4). Power then routes through the Junction Box Fuse/Relay Panel (pages 13-15/13-16, showing 20A and 10A fuses) to the left and right headlamps via connectors C159, C160, C143, and C133. Wire circuits identified include 196 DB/O (dark blue/orange), 15 R/Y, 632 GV/O, 13 R/BK, 12 LG/BK (light green/black), 160 DB/W (dark blue/white), 161 DG/O (dark green/orange), and 57 BK ground wires terminating at grounds G103 and G104 (grounds pages 10-5 and 10-6). Splices S212, S244, S114, S122, S104, and S106 are shown. Callout notes explain that the HEAD switch position allows current to the Dimmer/Flash-to-Pass function and that the multi-function switch lets the operator select HI beam, LO beam, or Flash-to-Pass. A reader can trace headlamp power flow, identify wire colors and connector numbers, and find cross-referenced manual pages for testing.

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Frequently asked questions

What wire colors feed the headlamps in this daytime running lamps diagram?: Circuit 12 LG/BK (light green/black) and 160 DB/W (dark blue/white) feed the left headlamp through connector C143, while 12 LG/BK and 161 DG/O (dark green/orange) feed the right headlamp through connector C133. Ground is circuit 57 BK.
Where do the headlamps ground in this diagram?: The left headlamp grounds through splice S106 to ground G104 (see Grounds page 10-6), and the right headlamp grounds through splice S104 to ground G103 (see Grounds page 10-5), both on circuit 57 BK.
What does the Main Light Switch do in the HEAD position?: Per the callout, the Main Light Switch (page 13-17) in the HEAD position allows current to flow to the Dimmer/Flash-to-Pass function of the multi-function switch.
Which pages cover switch testing for this circuit?: The diagram references page 149-1 for Main Light Switch testing and page 149-4 for Multi-Function Switch (dimmer/flash-to-pass) testing.
What fuses are involved in the daytime running lamps circuit?: The diagram shows a 30A fuse in the Power Distribution Box (page 13-2) and fuses in the Junction Box Fuse/Relay Panel (pages 13-15/13-16) including a 20A fuse (position 16) and 10A fuses (positions shown as 2 and 26; some markings partially legible).