1

B-CAN_H

Communication line

???

2

B-CAN_L

Communication line

???

3

GND

Ground for automatic lighting control unit-sensor

Less than 0.2 V at all times

4

+B BACK UP

Power source for automatic lighting control unit-sensor

About battery voltage at all times

5

H/L ON SW

Outputs H/L ON SW signal

With combination light switch is in ON position: less than 0.2 V
With combination light switch is in AUTO position and the conditions for the headlight to be ON: less than 0.2 V
If none of the above conditions are met: about battery voltage