Quote:
Originally Posted by ElectroBoy
Looking at their website Xenon Depot claims to have Toyota OEM equivalent intensity for the DRL function. So if they really work that way they must have designed them purposefully to use the 4Runner PWM waveform, rectified it etc to use as a controlled constant current source for their LEDs. Looks like they spent the effort for a better design, better parts, and it costs more $$. The cheap stuff on Amazon and eBay don’t do this.
I think I read somewhere that it took them a few versions to get the DRL right, but some folks still detect a slight flicker. Maybe someone can chime in on their experiences.
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I had the XD high beams (before I learned that drop-in LED bulbs suck and went back to H9/9011 halogen bulbs). Well, they suck less for high beams as the focal point is not as critical in an open-pattern reflector. Anyway, the PWM drivers worked great as DRLs. They had a slight pulse to them, I'd compare it to a fluorescent hum more than a flicker. I can't say how they work for a series/voltage drop setup on the 21+ Pro/Limited headlights.
