Check each bulb and bulb socket for damage or wear, proper connections, and also for continuity between the terminals.
Damage/wear → Repair or replace the bulb, bulb socket or both.
Improperly connected → Properly connect. No continuity → Repair or replace the bulb, bulb socket or both.
Types of bulbs
The bulbs used on this vehicle are shown in the illustration.
Bulbs "a" are used for the headlights and usually use a bulb holder that must be detached before removing the bulb.
Bulbs "b" and "c" are used for front turn signal/position lights and rear turn signal lights. They can be removed from the socket by pushing and turning the bulb counterclockwise.
Bulbs "d" are used for auxiliary and license plate lights and can be removed from their respective socket by carefully pulling them out.
![](https://motoinstruction.ru/img/yamaha/20/126919.jpg)
Checking the condition of the bulbs
The following procedure applies to all of the bulbs.
1. Remove:
- Bulb
Warning: Since the headlight bulb gets extremely hot, keep flammable products and your hands away from the bulb until it has cooled down.
Notice:
- Be sure to hold the socket firmly when removing the bulb. Never pull the lead, otherwise it may be pulled out of the terminal in the coupler.
- Avoid touching the glass part of the headlight bulb to keep it free from oil, otherwise the transparency of the glass, the life of the bulb, and the luminous flux will be adversely affected. If the headlight bulb gets soiled, thoroughly it with a cloth moistened with alcohol or lacquer thinner.
2. Check:
- Bulb (for continuity) (with the pocket tester). No continuity → Replace.
Pocket tester 90890-03112.
Analog pocket tester YU-03112-C.
Before checking for continuity, set the pocket tester to "0" and to the "
![](https://motoinstruction.ru/img/yamaha/20/126921.jpg)
a. Connect the positive tester probe to terminal "1" and the negative tester probe to terminal "2", and check the continuity.
b. If reading indicate no continuity, replace the bulb.
![](https://motoinstruction.ru/img/yamaha/20/126920.jpg)
Checking the condition of the bulb sockets
The following procedure applies to all of the bulb sockets.
1. Check:
- Bulb socket (for continuity) (with the pocket tester)
No continuity → Replace.
Pocket tester 90890-03112.
Analog pocket tester YU-03112-C.
Check each bulb socket for continuity in the same manner as described in the bulb section; however, note the following.
a. Install a good bulb into the bulb socket.
b. Connect the pocket tester probes to the respective leads of the bulb socket.
c. Check the bulb socket for continuity. If any of the readings indicate no continuity, replace the bulb socket.