The adapter VAS 5259 is required in conjunction with vehicle diagnosis, testing and information system VAS 5051/VAS 5051B and multimeters V.A.G 1715 and V.A.G 1526/1526A/1526B for simple, quick and safe pick-up of the various electrical/electronic signals from components, such as: - Piezo injectors - etc. The connectors are decoded and are thus compatible with a number of 2-pin connectors. Use of the adapter is described in the relevant workshop/technical information.