This package includes- • Easy wiring solution to installing a nitrous bottle heater • Harness Routing Instructions • Detailed Colored Wiring Diagram • Deutsch Connectors • High Quality Molex Terminals • Bueler 40/60 Amp Relay • Protective Expandable Wiring Loom • Automotive Copper Core Wire with Protective Silicone Coating • Inline 30 Amp Fuse • Illuminated toggle switch • Works in conjunction with or without a nitrous pressure safety switch