Now that we are topside, the brains of the operation gets wired next. The great thing about the Smart Shift computer is the options. It can be installed anywhere free of moisture, including under the dash, under the seat, in the trunk, etc. The wiring is also a fairly simple process. Black is the ground, red is the lead 12-volt ignition source, brown goes to the brake light switch, and yellow is for a Gear Vendors unit. A full set of detailed and easy to understand instructions are included. Even someone like me can understand the instructions.