hey guys i have an aftermarket extrenal DVD player and the pioneer rear vision camera that was installed by my audio shop awhile ago..i had to change out the battery and then when i turned the avic d1 on..the radio and cd functions still work and so do the navi..but i lost the rear vision when i shift the car into reverse and i lost my external dvd player input that I had on aux...do I have to program something on the head unit..i mean nothing was done except disconnecting the car battery..please help

RTFM? Turning on the rear vision input is in the manual.

thanks..I didn't know I had to manually setup the rear vision and aux video..thanks!