The ZE-ANT-VW is specifically designed to work with the Z-E2015/H and Z-E2026/H models of the Zenec range of in-dash Naviceivers . While many Volkswagen vehicles have a dual antenna system existing in the car, some only have a Single antenna. Zenec E>Go systems for Volkswagen are designed for the higher-spec dual antenna systems so a solution is needed for those vehicles that only have single antenna. This part will separate the signal from the existing single antenna into a dual connection which will then easily connect to your Zenec device.