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low beam on with hi


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silverado42000 
Copper - Posts: 65
Copper spacespace
Joined: September 25, 2006
Location: United States
Posted: October 25, 2006 at 10:53 AM / IP Logged  

hey, i have a 00 Silverado 2500 LS and i need the wiring diagram from the headlights so i can install a relay so when i turn on my high beams my low beams and my fog lights stay on, i would like to be able to do this from the fuse box is possiable to keep it looking stock since i have blank relay spots in the fuse box under the hood.

thanks in advance

low beam on with hi -- posted image.
ff-mike 
Copper - Posts: 199
Copper spacespace
Joined: November 15, 2004
Location: United States
Posted: October 27, 2006 at 12:22 PM / IP Logged  
Kind of contradictory to run fog lamps (for use in adverse weather to avoid glare) and high-beams (not to be used in adverse weather because of glare) simultaneously. Also not legal in many areas- too much candlepower.
silverado42000 
Copper - Posts: 65
Copper spacespace
Joined: September 25, 2006
Location: United States
Posted: October 30, 2006 at 11:06 AM / IP Logged  

well i dont plan on haveing them on all the time, just when im on the road and no other cars are infront of me i like to see easly so why not do that by having all the lights come on with the brights, plus for pics at night i think it looks better

low beam on with hi -- posted image.
kymadan 
Member - Posts: 39
Member spacespace
Joined: March 25, 2006
Location: United States
Posted: October 30, 2006 at 11:56 AM / IP Logged  
With it not being legal in some areas, it might be hard to get an answer to this.
silverado42000 
Copper - Posts: 65
Copper spacespace
Joined: September 25, 2006
Location: United States
Posted: October 30, 2006 at 4:30 PM / IP Logged  
how is this not legal, they sell kits for it, im just cheap and rather do it myself, just dont know how to go about doing this, weather i should just tap into the regular lights and use a relay or what
low beam on with hi -- posted image.
ff-mike 
Copper - Posts: 199
Copper spacespace
Joined: November 15, 2004
Location: United States
Posted: October 30, 2006 at 4:59 PM / IP Logged  
#1 FMVSS 108 states that you can only have 4 driving /fog /head /aux lamps on at the same time.
#2 Most states have an adopted or stricter version of this law.
The newer GM trucks have all of the lighting controlled by the BCM, and what works on my 98 may cause problems with yours.
silverado42000 
Copper - Posts: 65
Copper spacespace
Joined: September 25, 2006
Location: United States
Posted: October 30, 2006 at 5:14 PM / IP Logged  
well if thats the case then i will just have the highs and lows on with out the fogs
low beam on with hi -- posted image.
bballguy162006 
Member - Posts: 21
Member spacespace
Joined: November 17, 2006
Location: United States
Posted: November 22, 2006 at 5:17 PM / IP Logged  

Before I get started I just want to say: no offense to anybody....

Why does everybody care so much????  I guess poicemen are on this site?  I would understand if they would inform you that it is illegal (assuming you are going to use it on the highway, but who needs to know :-)  )  and then tell you how.  Now if you said that you want to use it to blind people while you were driving I would understand why nobody would tell you how, but this is not the case.

People ask how to install neons inside and outside of their car (illegal), they ask how to install aftermarket HID kits (illegal)....... Why does this matter?  I don't know

silverado42000:  If I knew I would tell you.  My best guess would be to use relays like you said, that should work.

I don't know if this helped at all, but I was just frustrated at people killing your idea.  You should do it if you want, it's your car and if for some reason you use it irresponsibly and get in trouble, that will be your fault and you will be responsible for it.  Which is the same for pretty much anything else aftermarket that people do to their car.

Mad Scientists 
Silver - Posts: 380
Silver spacespace
Joined: February 07, 2004
Location: United States
Posted: November 24, 2006 at 11:29 AM / IP Logged  

Why should we care?.. I'll start by addressing your closing comment..

"if for some reason you use it irresponsibly and get in trouble, that will be your fault and you will be responsible for it"

Unfortunately, that doesn't seem to be how it works; at least in the US where I live. We seem to live in a society of 'it's not my fault'. We recently had someone convicted of murder in the first here.. 20y/o shot and killed a retired schoolteacher. When it came time to decide if he would live or die, we got to hear about how he had a bad childhood, how he wasn't trying to kill her, just shoot the mirror on her car and he was startled when she honked the horn... over and over, just the same verse of 'it's not his fault'.

He's serving life without possibility of parole..  she's still dead.

What does this have to do with wiring so all the lights stay on?.. nothing much other then I'd be surprised if someone got busted for something they did and they _didn't_ try to place the blame elsewhere.  It does happen.. I saw it recently in the news; but it's not common.

To address the lighting issues.. first off, it _does_ have to be mentioned that what the OP is asking is illegal, at least in some areas. I don't see a problem with asking the OP if they've checked with local law enforcement to see if it is or not.

Secondly, it's not a very interesting question.. as we don't get paid for doing this (at least not directly.. I'm at work 'taking a break') it's not something that someone might be willing to spend the time to research. As noted earlier in the thread, cars are getting complicated and this question would require someone to look up a wiring diagram to see how things are set up.. now, I have done that in the past (looked up something for someone) but it was mainly because they wized me off with their crying.. which ties in with my next point..

People want the easy answers.. they don't want to hear 'calculate the value of the resistor using Vf and If and Ohms Law'.. they want to hear 'use a 270k Ohm resistor'.  How many requests do we get here for LED resistor values and 'How do I get 5v from12v?'..  I don't know that this request is going to be an easy answer...

And lastly.. Professionalism. You yourself alluded to this when you talked about not giving answers if you knew that the information given would be used for illegal purposes. It makes all of us here look bad when someone goes thumping through a residential neighborhood at 3am.. when someone uses the 'spit and twist' method of connecting wires together... it makes all of us look bad. When someone uses a R/S for an auto trans in a manual trans car, and things go horribly wrong, it makes all of us look bad.

My reasons for not responding to this thread are; I don't know the information required to help, I don't know how much running all the lights will help see at night (I think the OP would be better served with getting some **good** aftermarket lighting) and I have my concerns with running both high and low at the same time.. the heat generated might do bad things to the reflector housing.

Now.. if the OP would still like some help with simulating an ignition system for a senior project, I'd be glad to help.. and I've got some good ideas if they are interested in playing with ICs. 

As always.. no offense to anyone.. hope all had a good Thanksgiving (if that's something you celebrate)

Jim

Mad Scientists 
Silver - Posts: 380
Silver spacespace
Joined: February 07, 2004
Location: United States
Posted: November 24, 2006 at 2:17 PM / IP Logged  

Having said all that, the body control module does control some aspects of the lighting... specifically the fog lights. The headlights are powered through a relay and controlled on the ground side by the dimmer switch. The fog light switch sends a signal to the BCM which sends a signal to a fog light relay when necessary (when the lows are on).

The BCM also controls the DRLs.. while anything is possible, short of having the programming for the BCM (with regards to the lighting controls) the only way I see to accomplish what you want (all lights on) is through trial and error, with no promises as to what might happen with you start jumping circuits around. I don't know what kind of error messages you might generate when you try this.. you mentioned that people sell kits to do this.. if you link to one of these kits (hopefully with install info) I might have  a better idea of how they are accomplishing it.

Do you have the ambient sensor in the center of your dashboard?.. I'm assuming this vehicle is a 2000 Chevy Silverado 2500.

Detailed information about vehicles can be obtained by searching for Alldata DIY.. it's a subscription service, but it includes information at the repair shop level..

Jim

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