11
Power Connections for Uni-Directional Motor Pump #’s 1551, 3218
Attach a # 4 gauge wire (# 2 gauge if the run is over 12ft.) between the positive +12v terminal on the
battery and the battery post at the motor solenoid on the pump.
• This solenoid post will generally have a yellow fused wire attached to it that supplies power to the
controller.
• This battery connection may be fused at the source with a 150-amp circuit breaker.
• This +12v supply must be a dedicated and isolated circuit (not shared with other devices), and
must be constant, non-switched +12vdc.
Attach a # 4 gauge wire (# 2 gauge if the run is over 12ft.) between the negative -12v terminal on the
battery and the ground stud on the pump.
• This is the preferred method of grounding. If grounding the pump to the chassis, the connection
must be sound, free of paint and not susceptible to corrosion.
• The battery connection to the frame must also be # 4 gauge or larger cable.
WirING