Owner’s Manual &
Installation Instructions
Revision 6e
Page 26
Electrical System
IMPORTANT
The electrical system on the MV10 is a 12 volt negative ground system. Any attempt to
connect the battery in a reverse polarity manner could lead to extensive damage of the
electronics. Any damage which occurs as the result of reverse polarity will not be covered
by the manufacturers’ warranty.
Battery positive (
+) connects at starter motor battery post.
Battery negative (
-), or ground, connects to the stud at the engine bell-housing.
WARNING
When connecting the battery cables, always connect the positive (
+) battery cable first.
Once the positive battery cable is connected then the negative (
-) battery cable can be
attached which minimizes the possibility of electrical arcing. Always disconnect the
negative battery cable first.
The positive post of the battery is connected to the large post provided on the starter
motor with marine grade starter wire and appropriate eyelet. Once this connection is
made, all other positive engine circuits will be connected to battery positive from this
junction. The supplied heavy rubber boot (red) must be used on the starter motor terminal
to shield the terminal and prevent accidental arcing.
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