Does anyone know of an easy way to make the driving lights stay on whether you are on low or high beams?


It also aggravates me that they won't come on with the lights (auto on), I have to push the button every time. http://www.dieselplace.com/forum/smileys/Angry.gif

You could put a diode in between the high beam relay and the fog light relay as well one between the low beam relay and the fog light relay.


Read here for more info.


http://dieselplace.com/forum/forum_posts.asp?TID=13132&PN=1

If you're referring to the factory auxiliary lights those are actually fog lights, not driving lights (there's a pretty big difference in the beam pattern).

Personally, I found them to be seriously lacking, so I went with an aftermarket set of lights. That way, not only did I get REAL lights I wired them to work exactly like I wanted them to, which includes being on with the high beams.

The ones on the older trucks weren't very bright compared to the ones on the 03-up trucks. I never used the ones on my 2000 because they were too dim to do anything. They really didn't help after I tore them off in snowdrifts. The ones on my 2004 however are really bright and actually help a lot in seeing deer and things when the dims are on. I may have to be more carefull with them. I wouldn't mind doing max powers mod and making them stay on when the brights are on too.

Dont forget the maximum number of driving lights that can be lite on the front of a vehical at any one time is 4 lights, and the maximum number of driving lights that can be exposed or visable on the front is a total of 6 lights.

So you can use any combination of FOG, HIGH BEAM, LOW BEAM.

good luck

If they never seem to be bright enough when you need them then how can they be blinding? Makes no sense...

Typically there is a simple relay that is in place to inhibit the driving lights from being on when the high beams are on. On my 2001 Ram pickup, there is a foglight relay in an electronics box under the hood over the left fender. I don't know where there is one on a GM (yet) but there must be one somewhere. All I did was remove the relay, and make a simple jumper out of a 2" piece of wire and tow spade connectors. There are very specific prongs in which to jumper though, so an electrical schematic and some electrical knowhow is necessary.
I also did a mod on my brother's Dodge Viper. In that mod, all I had to do was take the Fog Light Relay out, break off one specific tang out of the 4 or 5 that are on the relay, and plug it back in.

I'm sure that someone on this board has figured out a way to modify the relay and posted it. I guess a little searching is in order. I need to know anyway since I plan on getting a new 2500HD sometime soon. :cool:

Actually some of us have already done this, we just did not modify the relay. We used diodes to make this work. Check out this thread..
http://dieselplace.com/forum/showthread.php?t=12804&highlight=DRL%27s

I am not sure if you can do this but I put High beam bulbs in my '04 housings and these bab's are real bright!

You can run the 9005 bulbs in your driving light locations, should not cause any problems.

You shouldn't have any problems.

I've had mine installed now for 2 years without any probs. 65 watt Sylvania Silver Stars in the low beam housings.

Yep put 9005s in the fogs and used a relay to power them on so they are on at all times the headlights are on. The relay I bought had one side that basically wired a set of lights on (fogs and lowbeam in my case). The relay turns the keeps the low beams on and turns on the DRLs too. It's pretty bright in front when I put the highs on. I still want to get a set of KCs though.

The bulbs used in the fog lights are "blunted" on the tip with a coating to keep the light focused. Using a non blunted bulb will increase the glare and I'd not recommend it.


You can run the 9005 bulbs in your driving light locations, should not cause any problems.

How brite is a flashlight in wide beam pattern when you are behind it?

Truth is, the 03 up fog lights really put some light in the ditches. Unfortunately, you have to cross a lane of traffic to ge to the LH ditch. Look at the shape of the reflector, and how much surface area there is in the inner vertical wall...

If they never seem to be bright enough when you need them then how can they be blinding? Makes no sense...

Dont forget the maximum number of driving lights that can be lite on the front of a vehical at any one time is 4 lights, and the maximum number of driving lights that can be exposed or visable on the front is a total of 6 lights.

So you can use any combination of FOG, HIGH BEAM, LOW BEAM.

good luck

That differs from state to states in the U.S.

what i meant by not being bright enough is during fog conditionsn when these auxillary lights SHOULD be used. they are blinding when guys use them at night only to look cool, thats what i don't like