Python 7656P 1 Way Replacement Remote. ***CRITICAL INFO*** For 4706P and 5706P systems, this remote works only with second generation systems. If you are note sure about your system, you must find the main control unit (brain) in your car. 2nd generation systems will have 4706 P or 5706 P stamped on the unit. 1st generation units will be stamped 4706P or 5706P (the difference being that 2nd generations have a SPACE between the "6" and the "P" while non-compatible 1st generations have no space between the "6" and the "P". If it turns out that your system is 1st generation, you an use model 7654P