5-8
IGNITION
WIRING HARNESS
WIRING
HARNESS
A coil
DESTROYED
when
12-volts
was connected
into
the
magneto
wiring
system.
Mechanics
report
in
8596
of
the cases, the damage occurs when an accessory
is connected
through
the key switch.
tructive
in a salt water
atmosphere.
There-
fore,
during
the
troubleshooting
work
on
these
engines,
always
disconnect
this
plug
and
make
a careful
check
for any
sign
of
corrosion.
I
Key
Switch
A magneto
key switch
operates
in
RE-
VERSE
of any other
type key switch.
When
the
key is moved
to the
OFF
position,
the
circuit
is
CLOSED
between
the magneto
and
ground.
In
some
cases,
when
the
key
is
turned
to the
OFF
position
the
points
are
grounded.
For this
reason,
an automotive-
type switch
MUST NEVER
be used, because
the
circuit
would
be opened
and dosed
in
reverse,
and
if
12-volts
should
reach
the
coil, the coil will be
DESTROYED.
STERN
liGHT
\,/
JUNCTION
BOX
WIRING
HARNESS
TO
ENGINE
Functional
diagram
to
illustrate
proper
hookup
of
accessories
through
a
junction
box.
If
a
junction
box is not
installed
on the boat, connect
accessories directly
to
the battery.
NEVER connect
accessories through the key switch.
CRITICAL
WORDS:
These
next
two
paragraphs
may well be the most important
words in this chapter.
Misuse of the wiring
harness
is the most single
cause of electri-
cal problems
with outboard
power plants.
A wiring
harness
is
used between
the
key
switch
and
the
engine.
This
harness
seldom
contains
wire
of sufficient
size
to
allow
connecting
accessories.
Therefore,
anytime
a new accessory
is installed,
NEW
wiring
should
be used between
the
battery
and the
accessory.
A separate
fuse
panel
MUST
be installed
on the dash.
To connect
the
fuse panel,
use one red and one black
No. 10 gauge
wires from the battery.
If a
small
amount
of 12-volt
current
should
be
accidently
attached
to the magneto
system,
the
coil will be damaged
or
DESTROYED.
Such a mistake
in wiring can easily
happen
if the
source
for
the
12-volt
accessory
is
taken
from
the
key
switch.
Therefore,
again let it be said,
NEVER
connect
acces-
sories
through the key switch.
The wiring
harness
installed
on the
35
hp, 1959, and the 40 hp, 1960 model units,
was connected
to the the side of the engine
through
an electrical
plug
utilized
"male"
'and
"female"
connectors.
This
particular
type connector
has been a contributing
fac-
tor to a number of problems
in the ignition
system
due to the suceptibility
of the con-
nector
to corrosion.
The plug
is
exposed
and
subject
to moisture
which is especially
des-
Summary of Contents for 4906B 4HP 1969
Page 5: ......
Page 87: ...3 46 POWERHEAD Exploded drawing of a 7 5 hp powerhead 1956 58 with principle parts identified...
Page 88: ...CYLINDER BLOCK 3 47 HEAD GASKET RING...
Page 90: ...CYLINDER BLOCK 3 49 THERMOSTAT EXHAUST COVER The...
Page 137: ...4 46 FUEL LEVER AND LOW SPEED...
Page 153: ...4 62 FUEL Exploded view of a pressure tyoe fuel tank with major parts identified...
Page 157: ...4 66 fUEL...
Page 412: ...A 16 APPENDIX Wire Identification 33 hp with Generator 1965 67...
Page 413: ...APPENDIX A 17 o C...
Page 414: ...Wire Identification 33 hp with Generator 1969 70...
Page 415: ...APPENDIX A 19 Wire Identification 35 hp 1957 59...
Page 416: ...A 20 APPENDIX Wire Identification 40 hp Standard Shift with Generator 1960 66...
Page 417: ...APPENDIX A 21 UJ cc b Wire Identification 40 hp Standard Shift with Generator 1967 68...
Page 419: ...APPENDIX Wire Identification 40 hp Electric Shift with Generator 1961 66 A 23...
Page 420: ...A 24 APPENDIX C 00 Wire Identification 40 hp Electric Shift with Generator 1967 68...
Page 421: ...Wire Identification 40 hp Electric Shift with Generator 1969 70...
Page 422: ...NOTES NUMBERS...