How to check the fuses - Ninja250 Howto - Ninja250Wiki The 30 amp main fuse is found in the starter solenoid unit next to the fuse box. Use a test light to check them. It's fast and easy. However, you may be able to find a blown fuse by a visual inspection. Take out the fuse and hold it up. The metal fuse part that's inside the plastic comes in a variety of shapes, but they're all similar.Rider Profiles · Forums Motorcycle Fuses & Fuse Boxes for Kawasaki Ninja 250 | eBay Get the best deal for Motorcycle Fuses & Fuse Boxes for Kawasaki Ninja 250 from the largest online selection at eBay. Browse your favorite brands affordable prices free shipping on many items.