This is a conversion cable that allows you to connect the GPS antenna pre-installed for Toyota genuine dealer option navigation systems to aftermarket navigation systems. 【Compatible Vehicles】 Toyota vehicles (Can be used with vehicles that have a Sumitomo type connector.) 【Compatible Navigation Systems】 Panasonic / Kenwood / Clarion / Alpine *Compatible with models prior to 2019 (Can be used with navigation systems that have a GT5 type connector.) GPS Antenna Installation Conversion Adapter Eliminates the need for troublesome GPS antenna wiring. 【Note】 *We are unable to answer questions regarding the product. Please purchase only if you are familiar with it.