C.E. Niehoff & Co. A9-462 Installation
C. E. Niehoff & C
o.
S
BRUSHLESS ALTERNATOR
A9-462 Energize Interrupt Switch
For Use On
Externally-Energized CEN Alternators
Installation Instructions
DANGER
CAUTION
1. Turn off engine.
2. Disconnect battery switch.
This symbol is used to indicate the
presence of hazards that will cause
severe personal injury, death or
equipment damage.
This symbol is used to indicate the
presence of hazards that can cause
minor personal injury or equipment
damage.
Disconnect battery switch to
CAUTION
reduce personal injury or
equipment damage.
3. Remove B+ hardware at alternator.
Connect white 35" lead,
using a soldered splice or similar,
to vehicle energize circuit
Using ring terminal and plastic sleeve
provided, connect red lead
to E terminal on regulator.
Torque to 3.4 Nm/30 lb. in.
4. Using emery cloth or equivalent, clean B+ hardware contact surfaces. Spread light coating of
water resistant, dielectric grease on terminal
and lugs.
5. Install A9-462 Energize Interrupt Switch in
stacking order shown in Figure 1.
DANGER
Failure to follow stacking order
will result in substantial
equipment damage.
CAUTION
More than two cable lugs on
B+ output terminal are not
recommended. To properly
engage brass terminal, B+ bolt
threads must be exposed a
min. 1/2" and max. 3/4" after
stacking order. Replace with
stainless steel bolt of suitable
length if necessary
6. Start engine. Check for alternator output.
1/2-13 B+ bolt –
torque to 30 Nm/22 lb. ft.
Lockwasher
Copper washer
A9-462 energize interrupt switch.
Cable lug only supports switch;
it does not connect
red or white wire to B+.
B+ cable
Cable lug from additional equipment;
see "caution" above
Figure 1 - Stacking Order at B+ Terminal
C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633
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