4 pcs 12V Mini Add a Circuit Fuse Tap flat fuse dapter with 8 pieces fuse (2A / 3A / 5A / 7.5A / 10A / 15A / 20A / 25A). Usefulness: The fuse tap turns one slot into two slots, provides one fuse holder to protect existing circuit, and a second fuse holder to protect new circuit.
eBay