Hello, this is a technology thread in which it is not about the extinction of the type approval when using these bulbs. Has anyone already had experience with it? It already starts with the enormous dimensions of the heat sinks of these LED replacement lamps, which are now available in countless versions. Then there is the problem, that with most older moppets the H4 headlight housings also hold as a distributor for electrical plug connections and therefore the heat dissipation eh The network offers different versions of H4 LED for motorcycles. That starts at 40W and then goes up to crazy 100W as LED power and that with a lifetime of 50,000 hours? So I can’t imagine, where the whole waste heat should go with a power consumption between 3.3 and 8.3 amps. Has anyone ever measured this by whether these lamps really take up such a big power? I’m curious about your A. VG.