Fog Lights as DRL
Fog Lights as DRL
I know someone alreay posted independent fog lights. However, I have another idea but I have not tried yet. Is it possible to turn fog lights as DRL intead of high beams?
These are the facts.
- Fog lights can only turn on when low beams are on.
- DRL uses high beams with lower voltage (9V I think).
- DRL will turn on when ignition key in on position.
So if I install H4 HID on the headlight and it gets power directly from the battery. HID harness plugs into one side of OEM headlight harness. My DRL on the dash board will turn on since HID gets signal from one side of OEM headlights.
If I run cables from high beam from each side to fog light on the same side, fog lights should be on as HID. I guess since no power to fog lights except from DRL. When I turn on the low beams, there is no DRL. Also when I turn on the high beams, there is no fog lights.
Do I have to put any kind of circuit to protect fog lights?
These are the facts.
- Fog lights can only turn on when low beams are on.
- DRL uses high beams with lower voltage (9V I think).
- DRL will turn on when ignition key in on position.
So if I install H4 HID on the headlight and it gets power directly from the battery. HID harness plugs into one side of OEM headlight harness. My DRL on the dash board will turn on since HID gets signal from one side of OEM headlights.
If I run cables from high beam from each side to fog light on the same side, fog lights should be on as HID. I guess since no power to fog lights except from DRL. When I turn on the low beams, there is no DRL. Also when I turn on the high beams, there is no fog lights.
Do I have to put any kind of circuit to protect fog lights?
Why? DRL are a safety feature. Just having the fogs as DRL will not be as bright or noticeable to other drivers.
I prefer my fogs with the yellow film and I run them all the time with my headlights on.
I prefer my fogs with the yellow film and I run them all the time with my headlights on.
Yes, I know that DRL is the safety feature. However, I have Bi-Xenon HID. HID is my DRL now. I don't want HID as DRL.
DRL does not require brightness as normal low/hi beams. Most of GM cars/trucks use parking or position lights as DRL.
DRL does not require brightness as normal low/hi beams. Most of GM cars/trucks use parking or position lights as DRL.
OK. Did not realize you had HIDs. Good luck with the wiring
You would have to run one, two, or even three relays. One to the high beam to prevent anything other than full power (high beam vs DRL) from triggering high beam in the HID. A second to the fog if you want it to turn off if you're in high beam mode. A third if you want to still be able to use it a regular fog lamps.
Unless you're an electrical engineer, or even an electrician... this won't be easy.
The simpler solution is to just wire the fog for independent control, pull fuse #15 (to prevent daytime high beam usage)... and just leave the fog on all the time.
If you do the independent fog mod. Leave the fog switch on full time. This way the fogs will turn on and off with the ignition. Mine are that way. Headlights do noy have to be on at all, not even parking lights. The fogs work off their own switch. I just never turn that switch off, so my fogs turn on/off with my ignition.
Good idea. I have not though of that. So I can turn off the fog lights if I want too. Otherwise, it will be DRL.
I have one question about this setup. Fog lights can be on while high beams are on. I think this will fail the safety inspection. I would think DRL will turn off when headlights are on.
I have one question about this setup. Fog lights can be on while high beams are on. I think this will fail the safety inspection. I would think DRL will turn off when headlights are on.
Actual DRL on the headlight remained off with or without battery relay just like it was prior to switching to motor cycle style individual harnesses for HID connected on each side.
I decided to turn on my DRL using LED strips. I put LED strips on each side and connected them in parallel to H4 HID ballast on each side. Without the ballasts the strips glow perfectly in DRL mode.
Problem that I encountered is that left side LED worked perfectly. But for some reason, the DRL led on the right is dimmer - a lot dimmer. I checked voltages and as soon as I connect the ballast, the DRL voltage on Passenger side drops to about 7 volts. Also, if I do not turn on the headlight to starting the engine, pax side headlight will not come up. I tried using H4 motor cycle harness with individual battery relay on each side and it does not solve the issue.
Hence, the only option left for me is to move circuit away from H4. Either to stock fog lights or LED strips. How do I do it ?
Last edited by B7773w; Jun 23, 2013 at 09:11 AM.
I got rid of the DRL indicator lamp by using two motorcycle harnesses to connect my HID's from each side. The DRL light on Dash went away. The HID's work fine and wiring is lot more simpler and logical. You don't need battery relays either.
Actual DRL on the headlight remained off with or without battery relay just like it was prior to switching to motor cycle style individual harnesses for HID connected on each side.
I decided to turn on my DRL using LED strips. I put LED strips on each side and connected them in parallel to H4 HID ballast on each side. Without the ballasts the strips glow perfectly in DRL mode.
Problem that I encountered is that left side LED worked perfectly. But for some reason, the DRL led on the right is dimmer - a lot dimmer. I checked voltages and as soon as I connect the ballast, the DRL voltage on Passenger side drops to about 7 volts. Also, if I do not turn on the headlight to starting the engine, pax side headlight will not come up. I tried using H4 motor cycle harness with individual battery relay on each side and it does not solve the issue.
Hence, the only option left for me is to move circuit away from H4. Either to stock fog lights or LED strips. How do I do it ?
Actual DRL on the headlight remained off with or without battery relay just like it was prior to switching to motor cycle style individual harnesses for HID connected on each side.
I decided to turn on my DRL using LED strips. I put LED strips on each side and connected them in parallel to H4 HID ballast on each side. Without the ballasts the strips glow perfectly in DRL mode.
Problem that I encountered is that left side LED worked perfectly. But for some reason, the DRL led on the right is dimmer - a lot dimmer. I checked voltages and as soon as I connect the ballast, the DRL voltage on Passenger side drops to about 7 volts. Also, if I do not turn on the headlight to starting the engine, pax side headlight will not come up. I tried using H4 motor cycle harness with individual battery relay on each side and it does not solve the issue.
Hence, the only option left for me is to move circuit away from H4. Either to stock fog lights or LED strips. How do I do it ?
PIAA | Deno 6 High Intensity LED Daytime Running Lamp Kit #19156
If you use H4 HID motor cycle harness and work fine, I would leave them as they are. The headlights would usually on all the time (in my case).
If you want to use LED strips that you have, why not you connect them from other side of the harness that does not cause it to dim? Just suggestion.
PS: DRL are mandatory in Canada. With HID my DRL headlights are off. I turn on headlights manually while driving in Canada. Of course, I do not care while in US.
My HID headlights are always on as DRL. I have PIAA LED as additional DRL.
Guys, I was thinking about it because I would like to install HID Bi-Xenon (headlights), and I have already installed HID in my fogs (I cannot use those as DRL unless I use a RELAY wire), but one of my other projects is to install a SWITCHBACK LED light in the TURN signal lights, so my idea is use the LED WHITE LIGHT of the SWITCHBACK LED as a DRL
I'll need your comments how to do that, my idea is run a wire from the FUSE box (number #15 I think) to the SWITCHBACK/TURN Lights, but I'm not sure and I'll wait until MAY or JUNE (now is so cold)
Your comments are welcome...
https://www.fitfreak.net/forums/2nd-...formation.html
I'll need your comments how to do that, my idea is run a wire from the FUSE box (number #15 I think) to the SWITCHBACK/TURN Lights, but I'm not sure and I'll wait until MAY or JUNE (now is so cold)
Your comments are welcome...
https://www.fitfreak.net/forums/2nd-...formation.html
Last edited by luismycorreo; Feb 13, 2014 at 02:46 PM.
Guys, I was thinking about it because I would like to install HID Bi-Xenon (headlights), and I have already installed HID in my fogs (I cannot use those as DRL unless I use a RELAY wire), but one of my other projects is to install a SWITCHBACK LED light in the TURN signal lights, so my idea is use the LED WHITE LIGHT of the SWITCHBACK LED as a DRL
I'll need your comments how to do that, my idea is run a wire from the FUSE box (number #15 I think) to the SWITCHBACK/TURN Lights, but I'm not sure and I'll wait until MAY or JUNE (now is so cold)
Your comments are welcome...
https://www.fitfreak.net/forums/2nd-...formation.html
I'll need your comments how to do that, my idea is run a wire from the FUSE box (number #15 I think) to the SWITCHBACK/TURN Lights, but I'm not sure and I'll wait until MAY or JUNE (now is so cold)
Your comments are welcome...
https://www.fitfreak.net/forums/2nd-...formation.html
I have bi-xenon HID for my headlights. The HID is always on in lo-beam when the engine is running. I think the DRL triggers the HID circuit to turn HID on.
If I want to use switch-back LED, I would connect to hi-beam since hi-beams act as DRL and hi-beams. Another wire will connect to turn signal as normal.
I setup this way in my 2013 Ford Raptor. Just an opinion.
Mine is USDM FIT, it might be different from Canadian FIT.
This is what I use as DRL now. I bought it from eBay for $110 (completed kit with harness and 2 LED lights). It turns on when I start engine. It will dim when I turn on the headlights.
PIAA | Deno 6 High Intensity LED Daytime Running Lamp Kit #19156
If you use H4 HID motor cycle harness and work fine, I would leave them as they are. The headlights would usually on all the time (in my case).
If you want to use LED strips that you have, why not you connect them from other side of the harness that does not cause it to dim? Just suggestion.
PIAA | Deno 6 High Intensity LED Daytime Running Lamp Kit #19156
If you use H4 HID motor cycle harness and work fine, I would leave them as they are. The headlights would usually on all the time (in my case).
If you want to use LED strips that you have, why not you connect them from other side of the harness that does not cause it to dim? Just suggestion.
DRL will trigger the HID kit if you don't pull fuse #15. More importantly, it triggers it in high-beam mode.
Frankly, I did not put the fuse #15. It triggers as low-beam, not the hi-beam. I think it depends on the HID kit you put it. Mine is PnP.
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