Possible he is talking about daytime running lamps

 

I don't think there is any sensor involved in the daytime running lamps.

 

Which "he"? For which vehical?

 

Coming from T&C Limited to DGC R/T and miss this option very much. This subject is reason signed up to forum. Thought maybe possible to add without being too much of headache? Anybody shed anymore light (no pun intended) on this subject?