View Full Version : Day Time Running Lights


96_lac_deville
03-24-06, 11:53 AM
I was wondering if anybody new how to cut off the day time running lights off on a 96 deville i cant find a fuse or nothing

caddydaddy
03-24-06, 03:34 PM
Are you sure the fuse for it is not in the trunk? I'm pretty sure that's where it is.

thu
03-24-06, 03:57 PM
Look at this anti-DRL site. I hope it helps. It doesn't list your specific model, but it might give you ideas on where to look.

http://www.lightsout.org/disable.html#GMgen

cadi197
03-28-06, 10:53 AM
I have a '96 Deville and I just pulled the DRL fuses under the hood. It gets rid of those.

GEORGEC
03-29-06, 06:57 AM
I wish people would not cut off their running lights. It makes the rest of us on the road, and the perpetrator, less safe each time someone does this.

G

pcunite
03-29-06, 09:48 AM
I wish people would not cut off their running lights. It makes the rest of us on the road, and the perpetrator, less safe each time someone does this.

G
Not to be argumentative but what would the world be like if every vehicle had running lights?

cadi197
03-29-06, 02:52 PM
I wish people would not cut off their running lights. It makes the rest of us on the road, and the perpetrator, less safe each time someone does this.

G

They dont look good to some people and also annoying. If you want safety then run the parking lamps.

yves
03-29-06, 03:41 PM
I believe you can turn the DRL function off.
Take a look at the pdf "OBD_IPC-OutputOverrideDisplays.pdf" in this thread:
http://www.cadillacforums.com/forums/cadillac-deville-1985-2005-including-1985/70052-cadillac-board-diagnostic-information.html

You can turn this function among other functions on or off. I never did any of this, so please read carefully the instruction.

thu
03-31-06, 11:46 PM
I wish people would not cut off their running lights. It makes the rest of us on the road, and the perpetrator, less safe each time someone does this.

Actually, that's not true. It's a fallacy in the U.S. that DRLs makes things safer.

GEORGEC
04-01-06, 06:39 AM
Not to be argumentative but what would the world be like if every vehicle had running lights?

SAFER!!!!!!!!!!!

GEORGEC
04-01-06, 06:40 AM
They dont look good to some people and also annoying. If you want safety then run the parking lamps.

Because they are smaller and less visible they offerless safety.

G

GEORGEC
04-01-06, 06:42 AM
Actually, that's not true. It's a fallacy in the U.S. that DRLs makes things safer.

Please quote chapter and verse of the recognized study that has proven that the DRLs do not provide more safety.

G

rudykip10
04-01-06, 01:39 PM
Of course they are effective!
Please quote chapter and verse of the recognized study that has proven that the DRLs do not provide more safety.

G
http://www.iihs.org/research/qanda/drl.html
How effective are DRLs? Nearly all published reports indicate DRLs reduce multiple-vehicle daytime crashes. Evidence about DRL effects on crashes comes from studies conducted in Scandinavia, Canada, and the United States. A study examining the effect of Norway's DRL law from 1980 to 1990 found a 10 percent decline in daytime multiple-vehicle crashes.1 (http://www.iihs.org/research/qanda/drl.html#cite1) A Danish study reported a 7 percent reduction in DRL-relevant crashes in the first 15 months after DRL use was required and a 37 percent decline in left-turn crashes.2 (http://www.iihs.org/research/qanda/drl.html#cite2) In a second study covering 2 years and 9 months of Denmark's law, there was a 6 percent reduction in daytime multiple-vehicle crashes and a 34 percent reduction in left-turn crashes.3 (http://www.iihs.org/research/qanda/drl.html#cite3) A 1994 Transport Canada study comparing 1990 model year vehicles with DRLs to 1989 vehicles without them found that DRLs reduced relevant daytime multiple-vehicle crashes by 11 percent.4 (http://www.iihs.org/research/qanda/drl.html#cite4)
In the United States, a 1985 Institute study determined that commercial fleet passenger vehicles modified to operate with DRLs were involved in 7 percent fewer daytime multiple-vehicle crashes than similar vehicles without DRLs.5 (http://www.iihs.org/research/qanda/drl.html#cite5) A small-scale fleet study conducted in the 1960s found an 18 percent lower daytime multiple-vehicle crash rate for DRL-equipped vehicles.6 (http://www.iihs.org/research/qanda/drl.html#cite6) Multiple-vehicle daytime crashes account for about half of all police-reported crashes in the United States. A 2002 Institute study reported a 3 percent decline in daytime multiple-vehicle crash risk in nine U.S. states concurrent with the introduction of DRLs.7 (http://www.iihs.org/research/qanda/drl.html#cite7) Federal researchers, using data collected nationwide, concluded that there was a 5 percent decline in daytime, two-vehicle, opposite-direction crashes and a 12 percent decline in fatal crashes with pedestrians and bicyclists.8 (http://www.iihs.org/research/qanda/drl.html#cite8)

DaveSmed
04-01-06, 02:18 PM
Interestingly, my personal experience contradicts it. Both times someones run into my car, my car for one reason or another happened to have the headlights on during the day for some reason. (not that its anything to base an arguement from mind you, just an interesting observation)

Now for the sore spot.... Many newer cars are using daytime LED illuminated dashboards, due to the improved visibility. This style dash combined with DRLs leads to a lot of people crusing down the road at night with nothing on BUT the DRLs. I have seen this MANY times, enough that I would consider it a major problem. You could argue that it is a case of isolated driver stupidity that needs to be remidied with better training (owners manuals and what not) but then again, why not just convince people to use thier headlights the correct way in the first place, by turning them on when low light conditions exist, the same ones that the DRL studies are showing DRLs to be most effective in.

Also, DRLs have the added side effect of making motorcycles less conspicious.

One bonus though is if you are *ahem* in a situation where frontal illumination is necessary, and rear identification would be a "disadvantage" then they work quite well for that. (not that I would know anything about this... :p )

GEORGEC
04-01-06, 11:16 PM
Interestingly, my personal experience contradicts it. Both times someones run into my car, my car for one reason or another happened to have the headlights on during the day for some reason. (not that its anything to base an arguement from mind you, just an interesting observation)

Now for the sore spot.... Many newer cars are using daytime LED illuminated dashboards, due to the improved visibility. This style dash combined with DRLs leads to a lot of people crusing down the road at night with nothing on BUT the DRLs. I have seen this MANY times, enough that I would consider it a major problem. You could argue that it is a case of isolated driver stupidity that needs to be remidied with better training (owners manuals and what not) but then again, why not just convince people to use thier headlights the correct way in the first place, by turning them on when low light conditions exist, the same ones that the DRL studies are showing DRLs to be most effective in.

Also, DRLs have the added side effect of making motorcycles less conspicious.

One bonus though is if you are *ahem* in a situation where frontal illumination is necessary, and rear identification would be a "disadvantage" then they work quite well for that. (not that I would know anything about this... :p )

Your "personal" experience is insufficient to be used as a data point. A single data point effectively does not provide any data.

G

DaveSmed
04-02-06, 12:46 AM
Your "personal" experience is insufficient to be used as a data point. A single data point effectively does not provide any data.

G


Thought I addressed that here:

(not that its anything to base an arguement from mind you, just an interesting observation)

Anyway, interesting reading on both sides. I don't suppose you would have a link handy to the report cited as number 5 above by any chance? That one seems to be the best apples-apples comparison. I will do more research on the matter, but I must admit, I am leaning more towards the NMA's position on the matter at the moment. I have trouble believing that headlights at reduced intensity would be the difference between someone seeing a car coming thier way, but in the same vein, someone managed to miss my '68 with the regular headlights on in the middle of the day and run into it, so I know there are drivers "like that" out there.

I'm also curious as to that links data on the fuel economy, is that for later design DRL systems? I don't think the early ones were near that efficient, as they used resistors to reduce the intensity of the lights, which just converts the extra power into heat. The later designs that wire the lamps in series are a better use of the energy, but they leave the lights a bit on the bright side as far as DRL standards go. (cheap way to do it though) The best way to implement it that I have come across so far is via PWM on the low beams, or GM's method of using standard seperate clear signal bulbs, like found on many of thier trucks. If the data is for those later systems, then I could see the figures being appropriate.

funknice
04-02-06, 08:50 PM
What does it mean when you see someone else's lights in the daytime. Are they watching you when they should be watching the road? Or they notice you so they may not run into you. It's makes me no difference.

GreenMachine
04-03-06, 09:34 AM
I'm likeing the new Cadillacs and other GM vehicles haveing the parking lamps on for DRLs, looks nice.

In my experiance a car with DRLs (or the parking lamps acting as DRLs) is easier to see. When you have to make a "quick" manuever to avoid something its nice to tell real quick which cars are parked and which ones are running. (also helps in the distance making that indentification) I'm also not sure how they can make a car look bad, some photographers for cars actually have the lights on as a preferance for pictures.

Also all "road course" racing "leagues" have it manditory for the cars to have working lights and DRL's simply because it helps see cars not only through smoke created from a crash but also helps in crash aviodance.

Also almost all the GM vehicles made after the year 2000 have the same "twilight sentinial" (spelled wrong I know) which automatically turns the headlights on. My cadillac also automatically turns the lights on when I have the windshield wipers going (NYS law says if your wipers are on, your lights need to be on too.) If I have that feature disabled it will tell me "Headlamps Suggested".

You also don't need to do anything fancy with the electronics and fuses to turn them off (at least not in a 98' Deville) its a setting that can be changed in preferances (accesed by hitting the Information and Reset button I believe in th DIC).

thu
04-14-06, 05:40 PM
There's an organization that's lobbying against DRLs.

http://www.lightsout.org/story.html Scroll down about half way to view "The Case Against DRLs"

For studies, see: http://www.lightsout.org/studies.html

GEORGEC
04-15-06, 07:31 AM
There's an organization that's lobbying against DRLs.

http://www.lightsout.org/story.html Scroll down about half way to view "The Case Against DRLs"

For studies, see: http://www.lightsout.org/studies.html

Lack of intelligence even prevades orgainzations.

G