I'm booking Linea MJD dynamic this month so i want to go for reverse parking sensors from the dealer itself...anyonw knows if that really helps in linea or i need to go for reverse camera which will cost 13,000 at the TATA dealer ? will my warranty be void if i get these electrical gadgets fitted from the dealer itself ?? Plz let me know the cost of sensors and camera if anyone has got them fitted in their car ,do they work well? can i use the same screen for GPS(route tracking) ,which is being used for parking??? i have no knowledge regarding these, so plz guide me guys...!!!