How to identify the correct bilge pump wire

Correctly connecting the bilge pump wire will enable Boat Monitor to detect when the bilge pump is running, show activity in the app, and receive bilge pump alerts when the pump activates.

Before installation, you should identify the type of bilge pump that is installed in the boat. There are two types of bilge pump systems:

Automatic pumps with built-in level switch and three wires connected to the pump
Manual pumps with external level switch and two wires connected to the pump

1. Automatic pumps with built-in level switch should be connected according to the following diagram:

Wire color for the most common brands of bilge pumps:

Brand	Ground Wire	Automatic Wire	Manual Wire
Rule	Black	Brown	Brown with white stripe
Whale	Black	Brown	White
Attwood	Black	Brown	Brown/White or Tan
Johnson	Black	Brown/White	Brown
Seaflo	Black	Brown/White	Brown

2. Manual pumps with external level switch:

For manual pumps with external level switch the Boat Monitor bilge pump connection should be connected to the wire that runs from the level switch to the pump. In most cases, the manual bilge pump operation switch is connected to the same wire.