Toyota Y Cable for Toyota/Lexus stereos with Navigation or XM radio
Most Toyota and Lexus car stereos with Navigation feature or XM radio have the External CD changer port already occupied by navigation plug.
In such case, the Toyota Y cable should be used in order to make GTA Car Kit and Navigation both work at the same time.
For installation – disconnect the Male navigation plug from the stereo, and in it's place connect the male plug on the Toyota Y cable. Then connect the navigation and GTA Car Kits male plugs in to the female connectors of Toyota Y cable to complete the installation.