An exterior accessory assembly or module for a vehicle door assembly comprises an exterior rearview mirror and/or door cap assembly, which may further include a cover member, a door handle, window frame, window seal and/or an exterior rearview mirror assembly. The vehicle door assembly includes a door frame, which includes a cap and/or mirror mounting region, a lock and/or latch mechanism, trim pieces, and/or the like, and is mountable to a vehicle at the vehicle assembly plant as a single unit. The exterior rearview mirror and/or the cap assembly may mount to the modular door and provide an exterior rearview mirror, a window frame and/or door handle. The cap assembly and door frame may include corresponding electrical connectors for connecting electrical accessories of the cap assembly to a door wiring or harness. The cap assembly may include a window seal for slidably engaging a movable window panel of the cap assembly or door assembly.