Circuit diagram
Lighting system tests and checks
The battery provides power for operation of the headlight, taillight, and meter lights. If none of the above operates, always check battery voltage before proceeding further. Low battery voltage indicates either a faulty battery, low battery electrolyte, or a defective charging system. See page 6-9 "CHARGING SYSTEM" for checks of battery and charging system. Also check fuse condition. Replace any "open" fuses. There are individual fuses for various circuits (see complete Circuit Diagram).
NOTE: Check the headlight bulb first before performing the following check.
1. Headlight does not come on. (High and/or low beam)
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Check for voltage (12V) on "R/Y" lead at "LIGHTS" switch connector. |
No voltage |
Check wiring circuit from fuse to "LIGHTS" switch connector. |
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Voltage OK ▼ |
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Check for voltage (12V) on "L/B" lead at "LIGHTS" (Dimmer) switch connector. |
No voltage |
Check "LIGHTS'* switch and wiring circuit from "LIGHTS" switch to "LIGHTS" (Dimmer) switch connector. |
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Voltage OK ▼ |
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Check for voltage (12V) on "Y" or "G" leads at headlight bulb socket. |
No voltage |
"LIGHTS" (Dimmer) switch and/or wiring circuit from "LIGHTS" (Dimmer) switch to headlight bulb socket is faulty Repair. |
2. Taillight does not come on.
When the "LIGHTS" switch is "PO" or "ON" and the main switch is "ON" or "P" positions.
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Check for voltage (12V) on "L" lead at "LIGHTS" switch connector |
No voltage ► |
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| Voltage OK ▼ | ||
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Check for voltage (12V) on "L" lead at main switch connector. |
No voltage |
Wiring circuit from "LIGHTS" switch to main switch connector is faulty, repair. |
| Voltage OK ▼ | ||
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Check for voltage (12V) on "L/R" lead at main switch connector. |
No voltage |
Main switch is faulty, replace |
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Voltage OK ▼ |
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Check for voltage (12V) on "L" lead at taillight bulb socket. |
No voltage |
Wiring circuit from main switch to taillight bulb socket is faulty. repair. |
3. Auxiliary light does not come on.
When the "LIGHTS" switch is "PO" or "ON" and the main switch is "ON" or "P" position.
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Check for voltage (12V) on "L" lead at "LIGHTS" switch connector. |
No voltage |
"LIGHTS" switch is faulty, replace. |
| Voltage OK ▼ | ||
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Check for voltage (12V) on "L" lead at main switch connector. |
No voltage |
Wiring circuit from "LIGHTS" switch to main switch connector is faulty, repair. |
| Voltage OK ▼ | ||
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Check for voltage (12V) on "L/R" lead at main switch connector. |
No voltage |
Main switch is faulty, replace. |
| Voltage OK ▼ | ||
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Check for voltage (12V) on "L/R" lead at auxiliary light bulb socket. |
No voltage |
Wiring circuit from main switch to auxiliary light bulb socket is faulty, repair. |
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