October 11, 2019 by Iron Man Buying Guide Led Car Lights Review Top 6 Halogen & Led H4 Bulbs under Test, Which is Best? Even if all the world is talking about Led headlights, the vast majority of cars still try to bring light into the darkness with halogen bulbs. Are H4 led bulbs better than H4 halogen bulbs? To find out, we tested a total of 5 H4 bulbs … Read more