C.E. Niehoff & Co. N1128 Alternator/N3212 Regulator Installation - Manual

II0048B
Page 1 of 1
N1128 Alternator / N3212 Regulator
Installation Instructions
C. E. Niehoff & Co.
BRUSHLESS ALTERNATORS
OEM Wiring Connections -
Dual Voltage
Vehicle harness
(to +14V battery)
W
W
Regulator –
“+14V”
terminal
W
N3212
Regulator
Boot (p/n N9564,
supplied in
envelope assembly)
W
Nut, 5/16-18 UNC-2B;
torque to 5.7 Nm / 50 lb.in.
Washer
W
W
Nut, 1/4-20; torque to
3.4 Nm / 30 lb.in.
Washer
Regulator – “IGN” Terminal
Boots (p/n N9464,
supplied in
envelope assembly)
Vehicle harness W
Regulator – “AC” Terminal (optional)
V
Locknut, #10-24;
torque to 3.4 Nm / 30 lb.in.
W
W
V
W
V
W
DUAL VOLTAGE (28 V/14 V) applications:
1. Connect as shown.
2. Support harnesses
within 5” of regulator.
Figure 1 – N3212 Regulator Dual Voltage Wiring Connections
Figure 2– N1128 Alternator
Terminal on
Vehicle “B+” lead
V
Washer
Belleville
washer V
M10 x 1.5 Bolt;
torque to
15 Nm / 11 lb.ft.
Figure 2a – Positive Terminal Connections
V
+28 V Positive Terminal
on alternator
W
V
Washer
Belleville washer
V
M8 x 1.25 Bolt;
torque to 15 Nm / 11 lb. ft.
W
W
Ground Terminal
on alternator
Terminal on
vehicle ground lead
V
Figure 2b – Ground Terminal Connections
W
Washer
Regulator
receptacle
W
Phase
connector cap
W
V
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
Boot (p/n N9564,
supplied in
envelope
assembly)
W