Installation manual

Installation By Wire
Install BROWN Ignition Wire
The BROWN Ignition Wire (#1 in diagram at right) provides the ON/OFF voltage for the
regulator. This wire is included in the Ford-style plug at the regulator end of the wiring
harness. The other end of the wire is tted with a butt connector. Typically, the ignition
wire is connected to the ON side of the ignition switch. This may be at the actual switch,
or to the wire in the existing engine wiring loom that delivers switched voltage from the
ignition switch. In some cases, an oil pressure switch may be used to activate the regu-
lator. In either case, the regulator’s ignition wire must see zero volts when the engine
ignition is switched off. Voltage on the ignition wire may be 12V or 24V.
Install RED Power Wire
The RED Power Wire (#2 in diagram at right) is included in the four-wire Ford-style plug
and is factory installed on regulator packages designated with “H” at the end of the model
number. The other end of the Power wire is tted with a ring terminal connector. In most
applications, this wire can be connected directly to the alternator’s positive output post.
When a diode-type battery isolator is used, the Power (RED) WIRE must be connected
to the battery side of the battery isolator. Power Wire is equipped with 10-amp ATC type fuse. The Power Wire must be
fused to ensure against damage to the voltage regulator.
Install ORANGE Stator Wire
The ORANGE stator wire (#3 in diagram at right) provides a source of AC stator output voltage which is used by the regu-
lator to assist in voltage regulation. The regulator end of the stator wire is included in the black four-wire plug, which is
pre-installed on the voltage regulator.
When the tachometer is connected via the MC-624, the regulator will ensure that the tachometer will not discontinue sup-
plying eld current when the batteries are fully charged. When connecting the tachometer to the alternator stator output,
it will be necessary to determine the number of poles in the alternator in order to properly adjust your tachometer. Most
Balmar alternators feature 12-pole rotors and stators, though, in some cases, the pole count may be 14. See alternator
manual for specics. See your tachometer manual for adjustment instructions.
Install BLUE Field Wire
The BLUE Field Wire (#4 in diagram at right) provides regulated current to control alternator output. The wire is included
in the wiring harness Ford-style plug and is pre-connected at the regulator. At the other end of the wire, you’ll nd either
a plug or a ring terminal, depending on the alternator’s eld terminal connection. Attach the eld wire to the alternator’s
eld terminal.
Install Alternator Temperature Sensor
The optional Alternator Temperature Sensor (MC-TS-A) allows your
MC-624 voltage regulator to monitor your alternator for temperatures in
excess of safe operating levels. The MC-TS-A sensor includes a 54” ca-
ble, a sensing attachment lug and positive and negative regulator plug-in
connectors. To install the MC-TS-A:
1. Connect the sensor lug to one of the four bolts that hold the alter-
nator’s front and rear cases together. Extend sensor cable to the
regulator. The cable can be included within the regulator’s wiring
harness, or can be run alongside the harness and attached with
cable ties.
2. Connect the positive and negative female connectors to the Alter-
nator Temp. Sense terminals on the regulator (#5 is positive. #6 is
negative). It is essential that the terminals match the polarity of the
regulator connection pins (red wire to positive terminal and black
wire to negative terminal).
- 4 -