SERVICE SHEET
No. 1050 (contd.)
Testing the External Wiring Circuit
Using D.C. Voltmeter only
1. All cables, including battery, to be connected as normal. 2.
Connect voltmeter Red test lead to earth.
Testing Charging Circuit through Ignition Switch
3. Connect Black test lead to No. 2 terminal on rectifier.
4. Switch ignition to IGN position.
5. Battery volts (i.e., six or twelve should register on voltmeter.
6. If there is a zero reading on voltmeter in the above condition, check circuit back through ignition
switch and ammeter, etc., to the battery.
Testing Emergency Start Circuit
7. Connect Red test lead to earth.
8. Connect Black test lead to distributor C.B. terminal. 9.
Open ignition contacts.
10. Switch ignition to EMG position.
11. Battery volts should register on the voltmeter.
12. Transfer Black test lead to alternator Green/Yellow lead. 13.
Battery volts should register on voltmeter.
Note
These tests are to be carried out in the case of "No Charge" or "No Emergency Start" if previous tests
have been carried out and all is in order.
It is important that both the ignition timing and the rotor timing is correct for efficient operation of
Emergency Start.
Testing the `Low,' `Medium'
and `High'
Charge Positions
Using D.C. Voltmeter only
1. Connect Red test lead to earth.
2. The set, including battery, connected as normal with the exception of the alternator Green/
Yellow cable which should be disconnected at the snap connector under the saddle.
3. Connect Black test lead to Green/Yellow cable coming from headlamp (i.e., not coming
from alternator).
4. With ignition switch in IGN position and lighting switch OFF.
5. A low voltage (i.e., 1-2) should register on voltmeter.
6. With lighting switch in PILOT, zero voltage should register on voltmeter.
7. With lighting switch in HEAD position a low voltage should register on voltage.
Note
Incorrect switching of these cables will cause incorrect charging rates, i.e., failure of Green/Yellow and
Green/Black linking together in HEAD position will result in a low charge rate with headlight switched on.
In the case of incorrect switching it is necessary to check the wiring and the switch for correct
connections, etc.
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