- Seat Cover (see Frame chapter)
- Fuel Tank (see Fuel System chapter)
- Connectors [A] (disconnect)
- Clamp [B]
- Bolts [A]
- Regulator/Rectifier [B]
Rectifier circuit check:
Check conductivity of the following pair of terminals.
Rectifier circuit inspection
| Tester connection | BK/BL-BK1 | BK/BL-BK2 | BK/BL-BK3 |
| BK/W-BK1 | BKW-BK2 | BK/W-BK3 |
★ The resistance should be low in one direction and more than ten times as much in the other direction. If any two leads are low or high in both directions, the rectifier is defective and must be replaced.
Note. The actual meter reading varies with the meter used and the individual rectifier, but. generally speaking the lower reading should be from zero to one half the scale.
Regulator circuit check:
To test the regulator out of circuit, use three 12 V batteries and a test light (12 V 3-6 W bulb in a socket with leads).
Caution! The test light works as an indicator and also a current limiter to protect the regulator/rectifier from excessive current. Do not use an ammeter instead of a test light.
Check to be sure the rectifier circuit is normal before continuing.
Regulator circuit test - 1st step:
Connect the test light and the 12 V battery to the regulator/rectifier as shown.
Check BK1 BK2, and BK3 terminal respectively.
★ If the test light turns on. the regulator/rectifier is defective. Replace it.
★ If the test light does not turn on, continue the test.
Regulator circuit test - 2nd step:
Connect the test light and the 12 V battery in the same manner as specified in the «Regulator Circuit Test - 1 st Step».
Apply 12 V to the BK/R terminal.
Check BK1, BK2, and BK3 terminal respectively.
★ If the test light turns on, the regulator/rectifier is defective. Replace it.
If the test light does not turn on, continue the test.
Regulator circuit test - 3rd step:
Connect the test light and the 12 V battery in the same manner as specified in the «Regulator Circuit Test - 1 st Step».
Momentarily apply 24 V to the BK/R terminal by adding a 12 V battery.
Check BK1, BK2, and BK3 terminals respectively.
Caution! Do not apply more than 24 V to the regulator/rectifier and do not leave the 24 V applied for more than a few seconds, or the unit will be damaged.
★ If the test light did not light when the 24 V was applied momentarily to the BK/R terminal, the regulator/rectifier is defective. Replace it.
★ If the regulator/rectifier passes all of the tests described, it may still be defective. If the charging system still does not work properly after checking all of the components and the battery, test the regulator/rectifier by replacing it with a known good unit.