BTW this is an aftermarket amp right? i'm assuming its all ready installed and you just wanna run your fronts on it?
run speaker wire from the speakers up front all the way to the trunk. you should be able to run it from the door, through the door jam, and through the inside edge of the vehicle. you'll have to remove the floor boards and run it under the carpet all the way to the trunk
and then it'll be at the amplifier...