Saxo central locking addon

Hi folks, friend of mine has Saxo with central locking but unfortunately it doesn`t have any “blinking” or indication of the lock-unlock state. So he ask me if we can do something about it, and if I can add some addition small fade in and out light in front. Ok, for the blinking I use direction lights, for the other option - low beam lamps and PWM.Represented here by that small bulbs. At that moment, the whole circuit is still on test board but hope soon to be fitted and tested on field. The elements are shown on the circuit diagram below. I consider using 2 of the IRF9540 mosfets for controlling the low beam lights instead one. Even by book it has 19A/100V and 2×55W ~ 12A are the low beam lamps still I do not trust somehow adding 12A only on that one small pin. So, if you look the diagram imagine that the low beam part is two times. As for the operation - if you push the remote , signal + and - are send to the door motors.There are two wires and when is the unlock state it has: A+B- , lock state A-B+. You`ve got the point I presume. So I take that 2 wires signal to the microcontroler(ATTINY85 in my case) and look only for HIGH one. The other third signal is from the HIGH BEAM stalk switch - if you pull it then you set the “FOLLOW ME” state. 1) UNLOCK - direction lights blink & PWM UP - delay ~3sec - PWM DOWN - ALL OFF 2) LOCK - direction lights steady & PWM UP - delay ~3sec - PWM DOWN - ALL OFF 3) LOCK + FOLLOW ME - direction lights steady & PWM UP - delay ~30sec - PWM DOWN - ALL OFF If you wish to skip the cycle when the car is locked and 30sec time is on - just unlock the car, or switch the lights stalk to park lights. To activate FOLLOW ME - with car open and lights off - pull the stalk for about second, the blinkers on the dash will blink to show that the state is ON. Pulling again - they will stay steady for while to show is OFF. If you forget your lights(even the park ones), that microrelay on the diagram will be off, no power to the atmel chip no blinking. For the blinkers - use the wire point little after the flasher relay. You can find all that at www.longgo.eu