KD-SX780

Yep May sound silly but do you have a dedicated line for youe B+ going to your amp section or Main B+ Line??? you as well should not I found from expereance use the factory B+ line to run an extras power type radio as its not really built or made for that. also Make sure you double and tripe check the grounds going to the radio as well and do not also use the factory grounds as they should as well be dedicated and that means right from the battery for the grounds.. Now a simple but very good way of getting a dedicated B+ line thats a switched type (only one when the keys on) Is to use a 12 volt 25 to 30 contact rating relay and use the cars original power wire for the 12+ for the relay coil and the ground from the original radio. Now one side of the relay can go directly to the battery and the on side when active can go to the radio.. simple but very efective.