... 5-15V,Operating current: 7.5A-40A 2.Sound, light alarm while fusing. Tractor fuse boxModel: WDL-DQH-7124Features ... electronic regulator;fuses for ammeter, electric regulator, front light, rear working light, flasher, horn, brake lamp,preheater, saftey start,etc. ... 3.Sound, light alarm while fusing.4. Electric principle diagram ...