Kleinn 10 Gauge Air Compressor Wiring Kit. Kit features a 26 foot fuse loop with AGU fuse holder and two-30 amp fuses, 12 volt/40 amp 5-pin relay, 18 gauge relay activation wire and necessary connectors. Can also be used in many applications where switching high amperage devices is required. This a great way to activate your horns when upgrading to a Blastmaster (#6880) or UltraBlastmaster (#6890) valve kit.