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Trying to upgrade my DRL/ high beam bulbs to LED. I’m having a problem with not getting two different brightness is out of my bulbs. I am stuck in permanent highbeam when my DRL’s are on. What bulb do I get to prevent this from happening?
 

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If I understand the way the DRL's work, it's because your LED replacements don't have as much resistance as the old halogen bulbs did. The DRL's only drop in brightness because they are wired in parallel with a capacitor with a lower resistance than the bulb - the current follows the path of least resistance to the cap, leaving very little current to light (dimly) the headlights. With a lower resistance LED installed, the headlight receives full (or nearly full) current all of the time.

I'm no electronics engineer, and I invite anybody with a better understanding to make corrections, but I believe this is your issue.
 

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I am having the same issue. However there's something else at play here. This model subaru has independent DRL's, the high beams are not active when lights are switched off, but are overridden by the LED bulbs. makes no sense to me, please help!!!
 

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LEDs and halogen lamps are fundamentally different technologies. The LEDs you put in emit light based off of the current through them. The halogen lamps are voltage based. The circuit that controls them that is included stock in the car is not designed for LEDs.

In addition, placing lamps into housings that were not made for them is illegal per FMSSV 108 (federal safety standards), for example, dropping an LED module into a housing designed for a halogen lamp.
 
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