Audio guys- need help with amp

[y3llow400ex]

Im new to the whole car audio thing so take it easy on me please. i told the wife i wanted a cheap sub and amp for x mas and so she got me one. Well i got 1 sony xplod sub and one sony amp (the red ones). The amp says its a 4/3 channel amp. rated power output: 55w x 4 (4 ohms) Maxx power output: 600w (2 ohms). Can i some how have this amp just run my sub and thats it? it shows on the box it going to a sub and 2 front speakers. If i can not run it to just the sub could i run it to my factory door speakers in my 05 ram. sorry for all the stupid questions, this is my first sub and amp. The part numbers are sub: xs-l100p5w and the amp: xm-554zr

[ShiftFMX]

Is there a factory head unit in the truck?

[y3llow400ex]

no its a kenwood, prolly 2-3 yrs old. think i paid like 250 for it when it was new, plays little video clips.

[ShiftFMX]

You shouldnt have to tap into your speakers as long as you have inputs on the back of ur head unit. Run your ground wire/power wire(from the car to the amp), and your RCA/remote wires (from the head unit to the amp) and that should be all you need

[ShiftFMX]

Kinda like this, But you only need to run wires to the speakers if you want to give them an extra boost of power

http://www.caraudiohelp.com/images/how_to_install_a_car_amp.gif

[y3llow400ex]

thanks for the info. here is what they are. i was going to go with 2 10's but i figured one would due for the type of music i listen to, especially in a regular cab truck.