This Fast kit comes with one harness for Ford and 2 brand new harnesses for LS XFI and XIM. Comes with all GM sensors (O2, temp, and TPS) and three bar map. Check Fast website to see all this system will co. Options are data logger, traction control and staging creep and much more. System is very easy to learn. I will give buyer tech help to get you started. This system cost $3,200 and will sell for $2,800. Thanks Turbo Jack