I may be the only one that thinks wiring harnesses are easy. The M&H harness is easy, but like anything, you do have preparation work to do, and having a FSM certainly doesn't hurt.Dash harness, front seat, radio, ash tray, steering column, both kick panels, maybe the glovebox and dash gauge cluster. Engine bay and forward light harness is not difficult. Taillight harness, rear seat bottom, drivers side panel and sill plate. It's preparation like anything else. I have done two of them. Plug and play, just make sure to get all of them before you start.