In this schematic the "Cusion Wire Harn" is used most often.
The sub assemblies and components that make up this Back-up Sensor Attachment include this Atch, Back-up Sensor, the most expensive part.
The most reasonably priced component used on the Pilot 2004 (4) 5dr Lx (kl,ka) Back-up Sensor Attachment is the Bolt,flange,6x12.