AIR-335-661 Power Tee

[Damon]

Unlike other power tees that have just the two wires (i.e., red positive and black negative), this one has 5 wires: white, black, grey, blue, brown. Which ones are the positive and negative wires to power up the NMEA 2000?

 

[Johnny Electron]

Here is the break out. It has power wires for down the left side of the bus and power for the right side of the bus. This cuts the current in half by driving each side separately. The shield should go to the bonding system of the boat.