Fitted 2 of these leds with heat sinks and managed to fit on the BMW light covers (just) first time out the dipped beam failed within 10 mins, turned the bike off and whipped the cover off, started bike and all ok for 50 miles ride, my question is .... do these leds just cut out when too hot? I need to make up or find some rubber covers after looking at a past thread.
When you say 'these' do you mean the leds i have i link for earlier in this post? - post #15
If that's a yes, then I'm unsure how you'd ever got the oem covers back on?!
But to answer you other question, yes, the heat sinks very definitely need to be exposed to the air. It's the gap between the led and the lamp casing you need to seal, which can prove a tad tricky. Tricky to find a suitable grommet.
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