i have the iva-d310 and the screen has no more backlit to it...i have a lifetime warranty for it but the iva-d310 model is discontinued soo im upgrading to the iva-d100 model...which is the 07 model...i was wondering if i could just switch the brain and the headunit of the iva-d310 and replace it with the iva-d100 brain and headunit with the iva-d310 wires still in my car...cause i paid alot to get it installed..thanks