Specifications

7
6
AC Only Alternator (Fig. 7)
The AC alternator provides current for headlights
only. Current for the lights is available only while the
engine is running. Output depends upon engine
speed. 12 volt lights with a total rating of 60 to 100
watts may be used. With lights rated at 70 watts, the
voltage rises from 8 volts at 2400 RPM to 14 volts at
3600 RPM, so headlight brightness changes with
engine speed.
Fig. 7
• 14 volts AC for lighting circuit
• One BLACK lead (1) from stator (3)
• WHITE connector output lead (4)
3
4
1
Dual Circuit Alternator (Fig. 8)
The dual circuit alternator uses a single polarized plug
with two pins. One pin is for charging the battery and
the second is for lights. Earlier dual circuit alternators
used a separate connector for each of the circuits.
The dual circuit alternator provides DC current for
battery charging and an independent AC circuit for
headlights. The battery is not used for lights, so lights
are available even if battery is disconnected or
removed.
Current for lights is available only while engine is
running. Output depends upon engine speed, so
headlight brightness changes with engine speed. 12
volt lights with a total rating of 60 to 100 watts may be
used. With lights rated at 70 watts, the voltage rises
from 8 volts at 2400 RPM to 12 volts at 3600 RPM.
The current from the DC side of the alternator is
unregulated and is rated at 3 amps. The output rises
from 2 amps at 2400 RPM to 3 amps at 3600 RPM.
Fig. 8
• 3 amps DC+ for charging battery, RED lead (6)
• 14 volts AC for lighting circuit, BLACK lead (1)
up to connector, WHITE lead (8) after connector
• Diode encased at connector
• WHITE connector (7) with two pin terminals
6
7
6
1
8
6
8
Tri-Circuit Alternator (Fig. 9)
The tri-circuit alternator provides alternating current
through a single output lead and connector to a wiring
harness containing two diodes.
One diode rectifies the AC current to 5 Amps –
(negative) DC for lights. The second diode rectifies AC
current to 5 Amps + (positive) DC for battery charging
and external loads, such as an electric clutch.
NOTE:Some OEMs supply diodes as an integral
part of the equipment wiring harness.
A 1 OHM 20 Watt resistor may be placed in series with
the (+) DC charging lead, limiting the charging current
to approximately 3 amps when the clutch is not
engaged. When the clutch is engaged the resistor is
bypassed allowing full output to the battery and clutch.
NOTE:The 1 OHM 20 Watt resistor is supplied
by the equipment manufacturer, when
required.
Fig. 9
• 28 volts AC from stator (3) to diodes (9)
• One BLACK lead (1) from stator
• GREEN connector (10)
• WHITE lead (8) for lights
• RED lead (6) connector to battery and clutch
• 1 OHM 20 Watt Resistor (11)
• Charging (12) and Light (13) diodes
10
8
6
12
1
3
13
9
11