I just hooked up driving lights on my truck. I didn't think about one thing until i finished. I want them to be on with my normal headlights and my brights. what is the best way to do this? Is there a relay that i can have put 2 triggers on? I am guessing if i hook up the normal and bright switch both to a regular relay they will conflict with each other. I am trying to avoid rewiring the whole thing and maybe just adding a wire or 2 but if i have to i guess i have no choice.

 

Well yes it can be done.
A single relay signaled by both hi and low beam feeds thu isolation diodes should do it.
Then you don't have to pull the headlamp switch out, to use them.
Normlly it is not legal to run them with high beams.
This is why the factory sets it up for low beam only use.
I have the stock driving lights with a selection relay to switch between aux fogs under the towing hooks.
I have the fogs set to an area between the low beams and the driving lights level.
This sems not to bother oncoming trafic and gives a wide coverage for deer spotting along the roads.

 

Are they really "driving lights"? If so, don't run them with your low beams. It will at the least be very annoying to other traffic, if not blinding.

 

You bring up a valid point that is often missed.
Some lights like eye ball types don't have any focusing lenses.
Driving lights and fogs should all have verticle suppression and controlled horizontal focusing to be useful and not blind oncoming traffic but of course they must be level focused with the mounting adjustment or they become just a bad.
Make sure when buying that you look at the box to see what the beam focus is likely to be and adjust accordingly.

 

People also often use the terms interchangeably, and with factory stuff it is often neither (nor particularly good at either). Somewhere in between and often mostly cosmetic. Fog lights (which most OE aux lights are far closer to in a technical sense) have wide low beams that under most conditions will not directly project into oncoming drivers eyes.

True driving lights (like Hella and PIAA sell labeled as such) should never be used around other traffic no matter the aim. They have a narrow, more intense beam that is aimed higher and farther reaching that will blind other drivers. Even if they are aimed pointed way down (and way incorrectly) 90%+ of the time they have an unshielded filament (not easy on others eyes, even if the main beam is not hitting them directly). If you have them aimed way down, you are missing the point (and most of the benefit) of them.

Just like with your actual headlights, if you want them to actually work as intended, you need 2 different beam and distribution levels (which normally means 2 pairs of aux. lights).

In many states that is how the law is written, and for good reason: Fogs only for low beams, driving lights only with high beams.

You will find that there is never an unshielded bulb on low distribution ("fog" and low beam) lights on a car out of the factory. There is also a very good reason for this.

So which kind do you have?