Looking for a switchd power wirein the trunk area...HELP

[GarrettF]

I am mapping out a systtem and i havent decided wha i am going to do about a head nit yet. Anyway i think i am going t see how the factory headuint will sound with some bass form some subs i plan to hookup the line convertor to the signal going to the factory subs. but i need a switched power source in the trunk area so that the amp doesnt drain my battery when the car is off.. any body got any ideas?

[ca1242]

I am mapping out a systtem and i havent decided wha i am going to do about a head nit yet. Anyway i think i am going t see how the factory headuint will sound with some bass form some subs i plan to hookup the line convertor to the signal going to the factory subs. but i need a switched power source in the trunk area so that the amp doesnt drain my battery when the car is off.. any body got any ideas?

White wire at the factory amplifier location (left side of trunk on non-convertibles). Turns on and off with the factory radio.