No, prepackaged connector or installation kits from the manufacturer do not include other items that may be needed for the overall installation of a product into an aircraft. Since most avionics and instruments can be installed in a variety of aircraft, it would be impossible for anyone to predict every, specific installation item needed for every aircraft. For example, cable lengths, circuit breaker values, miscellaneous hardware can vary quite a bit between certain aircraft. Therefore, most equipment installation manuals include a section at the beginning of the manual that will indicate other items needed but are not supplied for the installation.