This is a conversion harness designed to allow the connection of a standard 025-type 12P cable to the rear AVC-LAN terminal of Toyota/Daihatsu genuine car navigation systems made by Denso Ten (ECLIPSE/Fujitsu Ten) that use a special 10P connector instead of the conventional 025-type 12P (e.g., NSZT-W61/NSZT-W61G/NSZT-W62/NSZT-W62G/NSZT-Y62G). Recent AVC-LAN systems are mainly used for navigation-linked ETC and rear seat monitors. For example, if you want to link ETC with the above-mentioned navigation systems, this conversion is necessary. This is a new, unused product made using genuine parts. If you need multiple units, please comment and I will list them as a set.