Have the part installed in my Opel Astra F. Until I finally found the place of installation by ZV relay and had created a suitable access for the turn signals, the rest was a mere formality. If I remove the search term, the complete package was installed and soldered in about 1.5 hours. The installation instructions are for trained personnel in order (one should ever have worked at the car!) At first I thought, the transmitter had a plastic case, but when unpacking I was very surprised by two stainless steel transmitter. The complete system offers very long range (over 20 meters), good and small stainless steel remote controls and with easy installation. If now the part still keeps a few years, everything is io (has only been two days installed) So, in this kit can not go wrong!