I have a 2004 tl and I've seen on previous posts that the pbr300x4 amp was able to replace the factory amp... (I'm very new to this) I've also seen that people were selling it with the PnP wiring already attached. If I were to buy the pbr300x4 and try to install it I'd have to cut wires and probably mess something up. I was wondering if someone could help me with the process of getting started or even where I could get the PnP to just hook everything up.