With more people getting into Z-OFFROAD LED products, we notice that some of them may get confused when switching from halogen bulbs to LED bulbs. Unlike halogen non-polarities, LED bulbs are strick with polarity and will only work when insert properly. See how Travis get things to work and his review on 3rd Gen LED Headlight Assemblies.
Last but not the least, seal the connector /socket with silicon tapes in case that the pins or socket get corroded or rusted.
The most important thing is to read user manual before you start. Unproper installation may cause fuse to burn out. So please follow the instruction and do it step by step. If you need any help, don't hesitate to contact us.