Sign up for FREE! Become a GM-Trucks.com Member Today!
In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience.
By Big R ED
Recently purchased a 2019 Silverado LD Custom, in Red Hot. I love the truck, but my eye sight requires better road illumination at night. My front bumper is Red Hot steel, without sensors and without driving light cut outs. I'm thinking of keeping an eye out for a used Red Hot OEM bumper with the factory cutout for the driving lights. Two questions - 1) will I simply be able to bolt up the OEM bumper, and plug the OEM diving lights into an already existing plug/harness, that is currently just tucked away and unused because I don't have fog lights and 2) are there good aftermarket driving lights available that don't look "buba"? The design of the front bumper only really has two recesses where they could be mounted, but those recesses are occupied by the tow hooks AND behind the grill looks undoable, since the automatic louvers that close at high speed come pretty close to the back side of the grill when open. Thanks for your thoughts.
This requires the use of a relay harness (which I recommend anyway) and a 4700uF capacitor
When DRL's are active, you car is supplying the following signal to your driving lights:
_ _ _ _ _ _ _ _ +12v
That's Correct, it 'Pulses' the current to lower the intensity of the light. This works perfectly for Filament bulbs, as you are simply heating a filament which produces the light. But when sent to the relay, it will cause the relay to latch and unlatch repeatedly which will cause flicker.
HID's however, need a constant current flow to them, such as the following:
Now, most people are over complicating things, by making the Fog's DRLs and such, but I don't want to fiddle around with the lights everytime I get in the car, so this is what needs to be done to be able to keep the Auto function of the headlights.
We will, by the use of capacitors, turn the DRL's Pulsing current -_-_-_ into a smooth, constant flow --------
So, we aren't relocating the DRL's, we are simply going to use HID's as DRL's AND Driving lights. Perfect! This is exactly how most Audi's and BMW's function anyways.
So, here is the miracle solution:
Using a 4700uF (That's microfarad) capacitor (A pair should run you 4-5 bucks at most) we are smoothing out the Pulses and sending a constant supply to the Relay.
This is called a smoothing or reservoir capacitor. What it does, is on a Positive pulse, it charges, and in between pulses it slowly discharges. The bigger the capacitor, the slower the discharge:
We can see after the capacitor, we have an almost linear voltage. How do we make this as linear as possible?
By using a capacitor as big as the 4700uF. This keeps the relay latched so that it doesn't interrupt the current flow to the ballast.I do NOT recommended using this without a relay, you shouldn't put this in parallel with the ballast itself.
And for when the driving lights go on, the constant +12v will simply keep the capacitor charged and this won't affect system performance as it basically will stay there fully charged until it can discharge. And when you cut power to the light, the capacitor will discharge quickly enough as to not allow the relay to flicker. The ballast see's it as the current beeing shutoff and not a pulsing current.
So, all you need to do, it simply splice a capacitor between the +12V and GROUND wire leading to the Latching relay, such as my diagram below shows:
Credit to mtlsportgt on mazda3forums.com
Hi, I have a 2000 gmc sierra with the OEM fog lights. Bought a set of those cheap oval pilot automotive lights that I want to use as an extra set of lights to the truck. I want to wire them so that they turn on with the stock fog lights. Would I be safe to just tape into the stock fog light wires? It says the lights are 12v 55w on the box, not sure if that's each or in total. They came with a fuse, relay, switch etc. but I don't want to fool around with all that stuff.
Also just a little off topic but since i'm here. My right bumper light keeps fogging up on the inside, tried resealing it with silicone that helped a little but now its bad again. Should I just throw it in the oven for a couple minutes to melt the silicone and then squeeze it together to reseal it?
Recently Browsing 0 members
No registered users viewing this page.
Most OnlineNewest Member
Who's Online 94 Members, 0 Anonymous, 2,486 Guests (See full list)
- john barker
- Pig Sooie 4
- Mike Harwood
- HK GUY
- Ithan Henry
- J A K
- 14 Silvy
- Doug Abner
- Gils sierra
- darren sanchez