Before reconnecting the vehicle wire harness to the siren receptacle, first put the siren and bracket in place beneath the
Battery Tray on the left side of the car engine. First, fix the siren bracket to your vehicle with properly tightened fasteners, then link the battery negative cable back. If you have installed a new alarm siren module, you must configure it in the Rcm (Roof Control, also known as Overhead Control Panel/Ocp or Dbe) before the Vtss will work. You have to use a diagnostic scan tool to set up the Rcm's siren configuration.