You can run just one wire from the battery to a distro block of some sort in the rear. But the gauge of the wire depends. What kind of amps ? How much power ? How long is the run from the battery to where you are going to mount your amps ? Let me know and I'll try to help you a little better //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif