The complexity of halo headlamp installation varies from vehicle to vehicle and from person to person, depending on their familiarity with automobile electrical systems. The installation method may not be too difficult for someone with intermediate to expert skills and understanding. It might be more challenging and time-consuming for individuals who aren't knowledgeable about automobile wiring or don't have any expertise with it. Removing the old headlights, connecting the wiring, and maybe changing the housing or mounting brackets are all common steps. A thorough installation guide or expert assistance may make the task much easier to handle.