C.E. Niehoff & Co. N1505-1, N3226, N3135 Installation
C. E. Niehoff & C
o.
S
BRUSHLESS ALTERNATOR
N1505-1 Alternator / N3135 Regulator
OEM Wiring Connections -
Dual or Single Voltage
Installation Instructions
DUAL VOLTAGE (28 V/14 V) applications
(see other side for single voltage):
1. Connect as shown on this page.
Regulator
receptacle
Regulator – “AC” Terminal
Washer
Locknut, #10-24;
torque to 2.3 Nm / 20 lb.in.
2A
Vehicle harness
Figure 1a – N3135 Regulator Dual Voltage Wiring Connections
➛
568
➛
N3135
Regulator
➛
➛
➛
connector cap
Regulator –
➛
terminal
➛
➛
Phase
“+14V”
➛
➛
➛
Washer
➛
➛
➛
Regulator – “IGN” Terminal
Washer
Nut, 1/4-20; torque to
Boots (p/n N9464,
supplied in
envelope assembly)
➛
Vehicle harness
(to +14V battery)
68A
Boot (p/n N9564,
➛
Nut, 5/16-18 UNC-2B;
torque to 5.6 Nm / 50 lb.in.
2.8 Nm / 25 lb.in.
supplied in
envelope assembly)
➛
N1505-1
Alternator
Figure 1– N1505-1 Alternator
➛
➛
T erminal on
vehicle ground lead
➛
Figure 1b – Ground T erminal Connections
➛
torque to 9Nm/80 lb. in.
➛
Lockwasher
➛
Washer
➛
Nut, .25-20; torque to
7.3 Nm / 65 lb.in.
T erminal and
Vehicle “B+” lead
Figure 1c – Positive T erminal Connections
6E
Ground Terminal
Bolt .3125-18-
+28 V Positive
Terminal
on alternator
Washer
➛
➛
Boot
➛
II0030APage 1 of 2
SINGLE VOLTAGE (28 V) applications (see other side for dual voltage):
1. Connect as shown on this page.
Phase
connector cap
➛
Regulator – “+14V”terminal
Lockwasher
Screw 10-32 UNF-2A;
➛
torque to 3.4 Nm / 30 lb. in.
➛
Regulator
connector
Regulator – “AC” Terminal
Locknut, #10-24;
torque to 2.3 Nm / 20 lb.in.
➛
Washer
N3135
Regulator
➛
➛
➛
➛
➛
➛
➛
➛
➛
➛
Nut, 5/16-18 UNC-2B;
torque to 5.6 Nm / 50 lb.in.
Washer
Regulator – “IGN” Terminal
Washer
Nut, 1/4-20; torque to
2.8 Nm / 25 lb.in.
Vehicle harness
➛
Figure 1a – N3135 Regulator Single V oltage Wiring Connections
2A
568
➛
Boots (p/n N9464,
supplied in
envelope assembly)
T erminal on
vehicle ground lead
➛
➛
➛
Figure 1c – Ground Terminal Connections
➛
N1505-1
Alternator
➛
➛
➛
➛
Ground Terminal
Bolt .3125-18-
torque to 9Nm/80 lb. in.
Lockwasher
Washer
+28 V Positive
Terminal
on alternator
Washer
➛
Boot
➛
Nut, .25-20; torque to
7.3 Nm / 65 lb.in.
Figure 1– N1505-1 Alternator
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
T erminal and
Vehicle “B+” lead
Figure 1b – Positive Terminal Connections
6E
➛
II0030APage 2 of 2
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