While we couldn't finish the installation of the wiper system until the body is in place, the FFR assembly manual suggests installing and wiring the wiper motor now if installing the optional wiper kit. Florida law requires wipers (check your state's legislation on wiper and washer requirements), so we ordered the wiper kit with our roadster. The wiper motor installs directly to the firewall with the included clamp. We used an RJM Injection Technologies wiper harness ($60 from its Web site) that is preterminated with the proper motor plug. It even features a self-park feature.