In the event that you already have a vehicle that is fully wired for the Sniper 1 but want to install a Sniper 2 EFI System without the need to undo all of that beautiful wiring, here is exactly what you need: An adapter harness that connects the new Sniper 2 EFI System directly to the 7-pin Main Harness and the 10-pin I/O Harness that came with the original Sniper. In addition, this provides you with an additional M8 CAN bus connector as well as a 5-volt output.