wiring an amp to my factory radio, i have power, ground, and the module hooked up for the RCA's where on earth does the blue wire go on this factory radio? i need help amp wont light i have it tore apart in my driveway now help fast its a 2000 silverado

 

is this blue wire your amp turn on wire? if yes then since your using a factory radio you need to find a keyed on (acc.) just a 12v source thats is only one when you turn the key

 

yeah it is and i got it i knew that it was for remote on, but it wouldn't fire the amp but so happens that the connection in the amp was loose thanks got it hooked up and sounds great