The revolutionary Mini-fusetapper taps into power at mini-fuseblocks! The device is simple to use. Simply select fuse to be used. Slip Mini-fusetapper over desired fuse leg. Insert fuse and Mini-fusetapper into fuse block. That's it! Now that fuse port is able to be "tapped"! Just use a slip-on terminal to provide power to cellular, stereo, and other applications.