INSTALLATION REQUIRED* NOTE: Any voltage leakage will affect the unO INSTALL» Instruction kit operation, example: if voltage is less than 12v then the unit wont flash properly. Please contact our support team on any problem and we will work it out with you. PROFESSIONAL INSTALLER IS REQUIRED. NOTE: Any voltage leakage will affect the unit operation, for example: if voltage is less than 12v then the unit wont flash properly. Please contact our support team.