12-24 volt (three wire) OMC electric trolling motor

We Recommend that separate batteries be provided for the electric trolling motor and the outboard motor. Using a common battery source for both motors may allow the electric trolling motor to discharge the battery to the point where the outboard motor cannot be started. However, see below...
                                                        February, 1983

12-24 Volt Model, using three batteries.
(Two for 12-24 volt electric trolling motor and one for the outboard.

1. Connect jumper lead (O) to - terminal (P) of No. 1 battery. Connect other end of jumper lead (0) to + terminal (N) of No. 2 battery.

2. Connect black lead (K) of 12-24V electric trolling motor to - terminal (L) of battery No. 2.

3. Connect white lead (M) of 12-24V electric trolling motor to + terminal (N) of battery No, 2.

4. Connect red lead (I) of 12-24V electric trolling motor to + terminal (J) of battery No. 1.

5. Connect red lead (Q) of outboard motor to + terminal (R) of no. 3 battery.

6. Connect black lead (S) of outboard motor to - terminal (T) of No. 3 battery.

12-24 Volt Model using two batteries.
(Two for 12-24 volt electric trolling motor and one of the two batteries for the outboard motor.)

1. Connect jumper lead (O) to - terminal (P) of No. 1-battery. Connect other end of jumper lead (O) to + terminal (N) of battery No. 2 battery.

2. Connect black lead (K) of 12-24V electric trolling motor to - terminal (L) of battery No. 2.

3. Connect white lead (M) of 12-24V electric trolling motor to + terminal (N) of battery No. 2.

4. Connect red lead (I) of 12-24V electric trolling motor to + terminal (J) of battery No. 1.

5. Connect red lead (O) of outboard motor to + terminal (N) of No. 2 battery.

6. Connect black lead (S) of outboard motor to - terminal (L) of No. 2 battery.

NOTE: WARNING
   If the outboard motor were connected to the positive and negative terminals of the first battery, there would be a 12 volt potential difference between the electric motor's ground and the outboard's ground. This difference will cause stray current corrosion or electrolysis to the outboard's lower unit.