If the TLA100 is connected and configured to operate in the "NMEA 2000 & Analog Gauge" mode, how do I connect the wires to the back of the analog gauge?

You connect the TLA100 operating in the NMEA 2000 & Analog Gauge mode to the gauge in the following way:

1. connect the black wire to the gauge ground terminal
2. connect the green wire to the gauge sensor terminal
3. connect the red wire to the gauge power terminal.