Look on the car side of the wiring harness. I am thinking it is a white (kind of a dirty white) wire that turns on the amp. It should just be a matter of putting power to that remote turn on lead. Let me know what you find out. There may be an additional piece you might need, but thats just for reducing the signal going into the amp. Also, if you have a multimeter or test light, check the blue wire coming from the radio to make sure it has 12V on it when you turn the radio on.
-There are 10 kinds of people. Those who understand binary, and those who do not.
-If we ever forget that we are One Nation Under God, then we will be a nation gone under...Ronald Reagan