Question: Do all lamps have cables?
Answer: Typically, incandescent lamps do not have cables. LED and combination lamps have cables.
Question: Can your lights could be used on roads?
Answer: All lights have been ECE / DOT / SAE approved, which means they can be used legally on the roads.
TIP: Double check the ground and always clean out the dirt/rust off from the connectors and make sure there is no pinched wire!!