Installation manual
CAUTION: The following instructions are intended for use by experienced marine
electrical installers. If you are not experienced at installing electrical system
components, we recommend the use of a qualied marine electrical technician.
Regulator Installation
The following information is intended to provide the installer with the basic information required to complete installation.
This section of the installation manual will deal with mounting, wiring connections and basic programming for battery
type. Additional information regarding advanced programming adjustments and troubleshooting are addressed later in the
manual.
Unpacking The Box
Your Max Charge MC-624-H regulator kit is packaged with the
following items:
• Max Charge MC-624 regulator
• 54” wiring harness
• Magnetic programming tool
• Installation and operation manual
If any of the listed items is not included with your regulator kit, call our customer service department at 360-435-6100.
Please note -- if your regulator box is marked Max Charge MC-624, without the “H” designation, your kit will not include
the wiring harness.
Locate And Mount The Regulator
Choosing a mounting location for your voltage regulator should be deter-
mined based on the following factors; distance from alternator, distance from
inverters, transmitters and other sources of RF noise, convenient access
and readability of the display. The regulator wiring harness is 54 inches long,
providing a three to four foot radius for mounting. Ample airow is essential
for the regulator’s proper operation. Ensure that the regulator is free from
obstructions that restrict air movement around or below the regulator’s alu-
minum heat sink. While the regulator is designed to operate safely in condi-
tions typical of a marine engine compartment, the regulator may be better
protected, and easier to use and monitor if mounted outside of the engine
compartment.
Should it be necessary to install the regulator further than 54 inches from
the alternator, ensure that any wire extensions are properly connected, as
resistance in the harness wiring can affect charging efciency. If harness
length must reach beyond approximately eight feet, replace the RED power
and BLUE eld wires with larger gauge wire that’s sized to ensure voltage
drop < 3%.
Basic Wiring Installation
The regulator’s wiring harness includes six wires required for standard
installation. Four of those wires are connected to the regulator via a
Ford-style plug connector that’s pre-installed on the regulator. These
wires include the Ignition (BROWN), Power (RED), Stator (ORANGE)
and Field (BLUE). Plug is shown at right.
In addition, the harness includes a separate Ground (BLACK) wire. The
proper terminal connection points for this, and additional wiring connec-
tions, are illustrated on the pin location legend shown and discussed on
the following pages.
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