Headlight sensor install

[biotope]

Originally Posted by CTScott

The green/white feeds the tail lights, license plate light, and front corner lights that come on when you turn the headlight switch to the first click (often called parking lights here in the US).

Attached are the illumination and headlight EWDs.

Attachment 47507

Attachment 47508

Thanks, have a better visualization on how the switching system works.

Tried to draw up something for the relay connection, is my understanding correct?

[CTScott]

Originally Posted by biotope

Thanks, have a better visualization on how the switching system works.

Tried to draw up something for the relay connection, is my understanding correct?

Correct

[biotope]

Originally Posted by CTScott

Correct

Finally managed to spare time trying out the installation. Some issue encountered, not sure if you could advice?

Without the relay connection for the parking lights, everything works well. It could auto on the headlight in the dark and off the headlight in the bright.

But when I made the relay connection, it will auto on the headlight & parking lights in the dark but fails to off the headlight & parking in the bright. I could hear the relay switching sound but the headlight & parking lights remain on.

Tried to change another relay, still having the same issue. Any idea what goes wrong?

[biotope]

Originally Posted by biotope

Finally managed to spare time trying out the installation. Some issue encountered, not sure if you could advice?

Without the relay connection for the parking lights, everything works well. It could auto on the headlight in the dark and off the headlight in the bright.

But when I made the relay connection, it will auto on the headlight & parking lights in the dark but fails to off the headlight & parking in the bright. I could hear the relay switching sound but the headlight & parking lights remain on.

Tried to change another relay, still having the same issue. Any idea what goes wrong?

Still cannot figure out why the parking lights cannot turn on by the autolight sensor. Maybe the output from autolight sensor for the parking lights portion is faulty.

Thinking of making some changes to the circuit by using the autolight sensor for the headlight portion. Below is the layout, not sure if this connection feasible? Any views?