Your truck could have a factory amp. If it does you need to use the amp turn on wire (blue/white). The best way to check is take a 9V batt and put some leads on it and touch it to the positive wire (white) and negative wire (white/with black stripe) of a speaker. Just tap it. If you hear a pop that means you dont have a factory amp. If you dont hear a pop that means you do have a factory amp. If it does have a factory amp i will look up the amp turn on wire for the truck and let you know what color it is.