5
Pull lever
The motor speeds up in an identical way as forward using
back further: same brown & blue wires, however the other half of the
center tapped pot is automatically used.
The contactor coils are supplied minus 48V via a 20 ga. black wire harness attached to
the B- terminal of the PMC. This harness also runs to the terminal strip where the motor
cable and control cable carry it through the console terminal strip and to the meter so the
meter can measure the battery voltage.
Each contactor has a diode across the coil for purposes of diminishing arcing on the rotary
switch. These diodes must be installed with the silver band end toward the plus, the colored
control wire, not toward the black negative wire. Otherwise, the fuse will blow and the diode
itself may also blow. (Unexplained repeated fuse blowing may be a reversed or bad diode.)
A short anywhere in the control circuits will cause the 10-amp fuse to blow. Without the
fuse complete motor and control cables are at risk.
The diode just below the fuse prevents damage from reversed battery polarity by
preventing the cut off contactor from operating; otherwise, connecting 48V in reverse to the
outboard would destroy the PMC when the key is turned on.
The varistor (275) is for protecting the plugging diode in the PMC from voltage spikes,
such as from nearby lightening. The plugging diode makes reversing smoother (essential on
tiller models). PMC will work without the plugging diode.
NOTE: The wiring diagram shows the GE motor. We have also used an Advanced DC brand
motor. The only difference is the location of the terminals on the motor. (This requires some
wires of different lengths.) The electrical connections are the same. With the Advanced DC
motor, to facilitate wiring, we usually flip the lower front terminal (the terminal to which A2
is connected) to the other side of the Forward/Reverse contactor set. (This terminal is on a
bar which goes across, so electrically there is no change.)
