Connecting the Power up
Now you've come to the stage of connecting the power wire to the battery. For this you will need to ensure you have an inline fuse on the wire. Some wires come with them built in (from autoleads). If not then you need to connect one up. When done, take the fuse itself out and leave the connector.
Next you need to crimp a big enough terminal on the end of the wire that will go over the battery terminal bolt. If you bought a new battery terminal, there will most likely be a place to put the wire. If you're using the existing, an eyelet over the bolt should do the trick provided you bend it to shape..
Take off the +ve terminal, put the eyelet over the bolt and reconnected the terminal to the battery. (dont forget to do back up).
Thats sorted the Power side of things... Or has it? If you are running a pretty hefty amp, you may need to uprate the ground wire from the bodywork to the battery. Its usually quite thick as is, but may be worth considering upgrading...Read up on the power issues guide, inparticular "The big 3".