Keeping DRL on all the time - Hyundai Forums : Hyundai Forum
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post #1 of 12 (permalink) Old 06-16-2017, 04:06 PM Thread Starter
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Keeping DRL on all the time

I really like the look of the DRLs and noticed that they only work when the headlights are not on. grr!

Does anyone know how to keep the DRLs on all the time?
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post #2 of 12 (permalink) Old 06-16-2017, 05:04 PM
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Does anyone know how to keep the DRLs on all the time?
Yeah, never use the headlamps. (You just knew someone was gonna say that didn't you? Glad I didn't disappoint )
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post #3 of 12 (permalink) Old 06-16-2017, 06:08 PM Thread Starter
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Aye!!! hahahha good one!
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post #4 of 12 (permalink) Old 06-17-2017, 07:28 AM
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Seriously though, it's not difficult to keep the DRLs on along with the headlamps. All you need to do is find the wires that power the low beam headlamps and link them to the wires that power the DRLs via a couple of diodes. I don't have any info on the Tucson but if it's wired anything like all the other Hyundai cars that I'm more familiar with you could do the mod at the dashboard fusebox or you could do it out at the lamps if that's easier. You just need to choose diodes that are large enough to pass the current of the DRL lamps....sample circuit below :

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post #5 of 12 (permalink) Old 06-17-2017, 08:25 AM
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This example is a little more work but has the advantage of not adding any significant additional load onto the headlamp switching circuit, which might use an expensive solid state switch inside the fusebox on a modern car. You wouldn't want to overload that $$$.

The only problem with both these circuits is they might cause a bulb failure warning, depending on how the failure detection works on Hyundai cars.

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post #6 of 12 (permalink) Old 06-19-2017, 06:21 PM Thread Starter
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T[/IMG]
Autospark! Thanks for all the details. I'll have to see if I can find someone to help me out with this. I haven never done anything like this. newbieee here
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post #7 of 12 (permalink) Old 06-19-2017, 08:40 PM
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If my light switch in in the Auto mode the DRL's are always on. If the headlamps are on, the drl's are also on. I just checked. If the fog lamps only are on, the drl's are off.
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post #8 of 12 (permalink) Old 06-19-2017, 11:53 PM
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If my light switch in in the Auto mode the DRL's are always on. If the headlamps are on, the drl's are also on. I just checked. If the fog lamps only are on, the drl's are off.
I could be wrong, but I don't think you can have the fog lights on without the headlights....unless you have re-wired it somehow.
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post #9 of 12 (permalink) Old 06-20-2017, 04:32 AM
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You can turn position lights ON and it is enough to be able to turn fog lights ON. Try it
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post #10 of 12 (permalink) Old 06-20-2017, 12:51 PM
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You can turn position lights ON and it is enough to be able to turn fog lights ON. Try it
It may be different in different countries. In the USA I don't think the fog lights can be on without the headlights being on.
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