ssc P4 + kl4

I haven't tried this mod yet, but based on my experience putting a Lux III UX1K in a KL4, I can say that the P4 will probably give up the magic smoke, too. The KL4 driver is designed for a Lux V. I think the Vf exceeds what the P4 can take. YMMV though. Someone else reported putting a Cree in a KL4 and it ran fine.
 
Unless you're changing out the circuit, you will ruin the led. The difference in vf between these two leds is too great.
 
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