If its Thatchum ALL wires will be black. A minimum of 2 immobilising circuits must be used. One should cut fuel other should cut engine spark or if not accessible the engine starter motor. All wires should be soldered! (Very important) All wires should be run to there locations using safe routes and not rubbing on exposed metal and secured in place. All wires should be insulated using heat shrink where possible or insulation tape and all exposed wire covered completely so they are no longer exposed. There are several earths from the control unit and each should be connected to the body in different locations. The live wire should be securely connected direct from the battery (Eg a fuse box feed in or ign feed in) Control unit should be hidden as much as possible and fixed to the vehicle securely using any security shields provided. The siren should be securely fixed and positioned down to the ground so it does not fill it water. All opening doors including the bonnet should have sensors. There should be a proximity sensor, be it microwave, sonic or PIR. You are not aloud to have a Turbo timer connected!
