I would stay away from what Lowe's sells (or any big box for that matter). The 4 awg wire that they sell will be much different than what you can get from a stereo shop, or welding supply store. The kits will give you everything that you need from the ring terminals for the battery, the ground block, the fuse holder for under the hood as well as the grommet for the firewall. Before you buy I would do some price shopping to see where you will end up spending more.