Daytime Running Lights changed ???

[HumbleAg]

[quote=f5fstop]As for why did they change, the magic word is GLOBAL. In some countries, the DRLs must be headlamps. So, a wiring change was made to make the DRLs all as common as possible. Don't ask me why the electrical guys didn't think of this in the beginning, since they knew the H3G was in the works.
As for a change, right now I can't say. The BCM controls the DRLs on my vehicle, via the signals bulbs. The turn signal lever and hazard switch signal the BCM that the flashers must be used, and the BCM then flashes the signals as required (flashers override the DRLs).
So far, the wiring has not been updated for the headlamp DRLs, but I have to assume the BCM is controlling these also, with the headlamp switch or light sensor overriding the DRLs. The BCM also controls the headlamps on the older style H3, via relays.

My guess is it can be done, but my guess is it might require a new BCM and/or a new wiring harness, or at the least a new BCM calibration.


I personally, prefer the signal bulbs as DRLs. In my opinion, they are easier to see, but that is probably a process of my old eyeballs, and certainly isn't based on anything else. Especially since I have seen some studies where the headlamps are more noticeable than the signals.
quote]


Thanks for the info. Was wondering why this thread went so wrong and if I'd ever get an answer to the original question. I personally like the dim headlights better than corner lights, but only because I grew to despise people driving with parking lights and fog lights on. Seems like that was an early 80's Trans Am thing. Was totally ignorant as far as I can tell, why would you need fog lights and not regular headlights? Just having the corner lights on seems similar to me (although I know DRLs make the truck easier to see).

Maybe mullet-head is still trolling around and can answer why they thought that was cool.