ELECTRICAL CONNECTION
FOR NEGATIVE GROUND ELECTRICAL SYSTEMS ONLY. See Figure 4.
The MST65 is intended for use in vessels with a 12 volt negative ground
electrical system. The Positive RED fused lead must be connected to the
positive (+) side of the electrical system and the Negative BLACK lead must be
connected to the ground negative (-) side. Reversal of these connections will
cause the fuse to blow and may seriously damage the unit, voiding the
warranty.
On smaller vessels, the negative BLACK lead can be connected directly to the
negative (-) terminal of the battery. The positive RED lead can go directly to the
battery positive (+) terminal, or if more convenient, to an accessory post on the
ignition switch.
On larger vessels with a switchboard, the negative lead should go to the
common negative bus and the positive lead to the switched and fused radio
(or spare) power circuit.
The orange fused lead is used to maintain the memories inside the radio and
must be connected to a cont12 Volt point such as the positive (+)
terminal of the battery.
NOTE: It is possible to use the MST65 on vessels with a 12 volt positive
ground electrical system, but special precautions are required when installing
the stereo system antenna and any accessories. If in doubt, consult a qualified
marine electronics technician.
FUSE REPLACEMENT
If any of the fuses blow, replace them as follows:
RED supply lead fuse:
7 Amp 3 AG type (1 3/16 inches)
ORANGE memory lead fuse: 1 Amp 3AG type (1 3/16 inches)
Figure 4. Electrical Connections
Page 6 Owner’s Manual MST65
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