Headlight sensor install

[CTScott]

Originally Posted by biotope

The chinese text mentioned means:

1. Green is to connect to left and right headlights (never mention whether is low or high beam)

2. Blue is to connect to the license plate light, left and right side light (not sure which lights they referring to) and display light. Question - is there any wire to tap for these lights signal?

Since it is for automatic on of the lights, I would say that green then goes to low beams.

For the blue, that would go to the green wire on the bottom right of your picture. Those lights are switched on the positive side, rather than negative like the headlights.

So, you will have to add a relay where the blue wire switches the ground side of the coil (and the positive side of the coil is connected to your ACC power wire). Then the normally open contacts will connect to the green wire on the headlight switch connector and to the green/white wire, which is the second to last wire on the opposite side of the bottom of the connector.