C.E. Niehoff & Co. N1509-2 Alternator Installation - Manual (Page 2)

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C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
When replacing N1506-1 alternators (see other side when replacing N1509-1/N1509-2 alternators):
1. Boot on AC terminal must remain affixed to regulator. The AC terminal will not be used
when replacing an N1506-1 alternator.
2. Install plastic cable ties as required to terminal lug TL1001 and tie wire away from
alternator.
3. Connect remaining cables as shown in Figures 2a, 2b, and 2c.
28 V B+ terminal connection “RED”
to 28 V battery positive terminal
Figure 2a – Wiring Connections
Terminal and
Vehicle “B+” lead
➛
Washer
➛
Nut, .25-20;
torque to
7.3 Nm / 65 lb.in.
Figure 2b – Ground Terminal Connections
➛
+28 V/14 V Positive
Terminal
on alternator
➛
Washer
Lockwasher
➛
Ground Terminal
Bolt .3125-18-
torque to
9 Nm/80 lb. in.
Terminal on
vehicle ground lead
➛
Figure 2c – Positive Terminal Connections
➛
14 V B+ terminal connection “YELLOW”
to 14 V battery positive terminal
28 V B– terminal connection
to 28 V battery negative terminal
28 V B– terminal connection
to chassis ground
Energize terminal connection
to vehicle energize circuit—
torque to 3.4 Nm/30 lb.in.
Boot must remain
affixed to regulator
➛