Hello S-Class driver: If your vehicle has a standard alarm system, where the turn signals are turned on when the alarm is triggered (blink) then this pager is just the right thing to do. Simply connect brilliantly, 600m range. 300m is falsely indicated in the product info. In the PDF operating instructions the actual 600m. THE LINK:http://www.louis.de/…/index.php?… The LINK for the installation instructions:www.louis.de/shop/addition/anl/10034963.PDF Have the part in me. Works perfectly. Connection is absolutely perfect. Connection is simple: In the trunk right or left simply solder on the board of the back light. The flash lamp has 2 connections, on the relevant connections (conductors) solder on it. + and – (mass) does not change. FERTIG!!! Functions:When the lamp flashes, the transmitter gets 12V and sends it.