An improved tractor-trailer communications and tracking system retrofitting assembly, comprising an insulated wire, a flexible wire sleeve, a sealed fuse box, a male connector and a female connector is disclosed. The insulated wire has a length sufficient to at least span the distance between the rear...http://www.google.cl/patents/US7336159?utm_source=gb-gplus-sharePatent US7336159 - System, method and device for retrofitting tractor-trailer communications systems
