Package Include: 1 x 553-106 Input output harnessPerfect Fitment553-106 Input output harness for Hol-ley EFI digital dashHol-ley 553-106 7Digital Dash Input Output Harness will plug into the rear of the Holley digital dash. It is easy to use. 553106 Harness is ran with high quality copper wiring and comes with 12 colored wires, 53 in length and wrapped in loom. 553-106 Auto Input Output Harness can be used to run level, temp/pressure/travel sensors, virtual switches, high beam/turn signal indicators etc.