Installation manual
1. IGNITION INPUT - Connects to a switched source
of battery voltage (to ignition switch or oil pressure
switch). BROWN wire in regulator wiring harness. Volt-
age provided can be 12V or 24V to activate ignition
circuit.
2. POWER INPUT - Supplies power to operate the regu-
lator and deliver eld current to excite the alternator.
RED wire included in Ford-style plug. The Power Wire
also provides a source of voltage for sensing. The
RED wire must be connected to a location that is a
direct source of battery voltage
3. STATOR IN - Connect to ORANGE wire included in
regulator wiring harness. This wire can be spliced
into to provide a source of an AC pulse to control a
tachometer
4. FIELD OUTPUT - Provides external (P-type) alterna-
tor eld control for the primary alternator. BLUE wire in
regulator wiring harness.
5. ALT. TEMP. (+) - For use with optional Alternator Tem-
perature Sensor (MC-TS-A). Sensor lug connects to
rear case bolt of alternator, enabling
regulator to monitor and react to alter-
nator over-temperature condition. USE
CARE TO ENSURE POSITIVE AND
NEGATIVE WIRES ARE CONNECTED
TO THE APPROPRIATE REGULATOR
TERMINAL.
6. ALT. TEMP. (-) - For use with optional
Alternator Temperature Sensor (MC-
TS-A). SEE INFO ABOVE (#5).
7. BAT. #2 TEMP. (+) - User selectable cir-
cuit can be used to temperature sense
at a second battery bank. Requires ei-
ther optional MC-TS-B sensor cable.
USE CARE TO ENSURE POSITIVE
AND NEGATIVE WIRES ARE CON-
NECTED TO THE APPROPRIATE
REGULATOR TERMINAL.
8. BAT. #2 TEMP. (-) - For use with op-
tional Battery Temperature Sensor
(MC-TS-B).
MC-624 Regulator Terminal Layout
- 3 -
9. BAT. TEMP. #1 (+) - For use with optional BATTERY
Temperature Sensor (MC-TS-B). Sensor lug con-
nects to negative battery post, enabling regulator to
monitor and respond to battery temperature condition.
USE CARE TO ENSURE POSITIVE AND NEGATIVE
WIRES ARE CONNECTED TO THE APPROPRIATE
REGULATOR TERMINAL.
10. BAT. TEMP. #1 (-) - For use with optional Battery Tem-
perature Sensor (MC-TS-B). SEE INFO BELOW (#8).
11. DASH LAMP - provides a source of ground under the
following conditions: Low charging voltage (<25.0V),
high charging voltage (>31.0V), high alternator temper-
ature (>105°C), or high battery temperature (>52°C).
500 mA maximum.
12. GROUND INPUT - Connects regulator to system
ground via alternator ground terminal. BLACK wire in-
cluded in Ford style plug. BAT. #2 TEMP. (-) - For use
with optional Battery Temperature Sensor (MC-TS-B).