It depends on the sensor. For all that it reads and monitors there are only 3 sensors that have to be wired(they are all electric by the way). The pyro, trans temp and the fuel pressure sensor. All are included with the kit but you do have to run the wire (one wire for each sensor) They also are included and part of the juice harness. They all are run under the hood. The only one that will require any effort is the pyro(if you dont already have a hole) will be to drill and tap for that sensor, the fp sensor comes with a tapped banjo bolt and the trans temp they state a location on the trans where you just unscrew a plug and screw in the sensor. The only wire you have to worry about getting into the cab is the wire(harness) to the display unit(actually the display wire harness out of the cab to the engine compartment to hook it up to the juice box harness). There is one other wire that needs to go inside the cab and hook up to an existing fuse for the turbo timer shutoff mechanism. It uses the ecm/pcm to monitor all the other readouts it provides. Hooking up those three sensors is much easier than if you were to do them with just guages as you dont have to worry about power or running those individual wires into the cab or putting connectors etc on the ends as they are all ready to hook up.